Reliable Japanese Toyota engines Series A. "Reliable Japanese engines." Notes of the automotive diagnostic engine 7a All about him

the main / Terms

Toyota created new force aggregate On the basis of 4a-Fe. Unlike the main model, the engine 7a has a more volumetric combustion chamber (1.8 instead of 1.6 liters), with other characteristics. This parameter reaches the maximum value when rotating the engine crankshaft at a speed of 2800 rpm. Due to the unique characteristics, the fuel economy is significantly saved, the efficiency increases, the car is quickly gaining speed. Drivers appreciated the advantages of the Toyota engine 7a when driving in difficult conditions of urban streets with traffic jams and frequent stops on traffic lights.

Engine 7A FE scope

As a result of successful test tests, as well as, thanks to a large number positive feedback Car owners, Japanese automakers decided to install this engine on the manufactured Toyota models. Japanese engine 7A FE is widely used in the manufacture of cars class C:

  • Avensis;
  • Caldina;
  • Carina;
  • Carina E;
  • Celica;
  • Corolla / Conquest;
  • Corolla;
  • Corolla / Prizm;
  • Corolla Spacio.;
  • Crown;
  • Corona Premio;
  • Sprinter Carib.

Car crown premium 1996 engine 7a

Premio - this is the second name of the first cars generation Toyota Crown produced earlier. To increase the number of sales, manufacturers went to change the design of the cabin, the appearance and name of the branded cars. On the updated vehicle The engine is installed, which has an injection of D-4 direct type.

Engine specifications 7A FE

This motor was in production for several years, starting from 1990 to 2002.

  1. The maximum power of the FE is 120 liters. from.
  2. The volume of operating cylinders - 1762 cm3.
  3. Developed torque - 157 NM when rotating the crankshaft shaft 4400 rpm.
  4. Piston stroke length - 85.5 mm.
  5. Cylinder radius - 40.5 mm.
  6. The material of the cylinder block is a cast-iron alloy.
  7. GBC heads - aluminum alloy.
  8. System timing - DOHC.
  9. Type of fuel - gasoline.

Features of the engine device 7a-Fe

In parallel with 7a-Fe, an engine with a marking 7a-Fe Lean Burn was created. The advantage of additional modification is its greatest efficiency. Gasoline is carefully mixed with oxygen in a variable intake manifold, which significantly improves the combustion efficiency of the fuel and air mixture.

Due to the action of electronic control systems, enrichment or depletion of mixtures in the specified parameters, which increases the engine efficiency. Judging by the numerous reviews of car owners equipped with 7A-FE Lean Burn, the engine has a record low fuel consumption.

The main differences between the new modifications of the engines 7a:

  1. Applying a collector with dampers to adjust the degree of enrichment of fuel-air mixtures towards the decline.
  2. The inclusion of the "poor regime" running the electronic system.
  3. The location of the nozzles.
  4. The use of special spark plugs with platinum spraying.

Excellent specifications And the high economy of 7a is provided, thanks to the work on depleted fuel-air mixtures (LEAN BURN). Most often, the engines 7a can be found on Toyota models (Karina, Calin). In the design of the intake manifold, the so-called, "depleted" version 7a-Fe, special dampers are used, which change the amount of oxygen in the mixture during the operation of the power unit under normal conditions without increased loads. This marks a slight decrease in the engine power indicator, approximately 5 horse power, as well as improved environmental characteristics.


Using the electronic control system, the transition to the depleted mixture occurs in automatic mode. When the 7A-FE engine operates at idle, the electronics does not control the oxygen supply. Depending on the position of the ACT selector, electronic system The engine control quickly responds to the driver's control exposure and turns on / off the depletion mode.

The nozzles for the engine 7A-FE are opened alternately, serving each cylinder separately. They are bundled directly in the lid of the valve body.

Thanks to the inclusion in the design of this engine, the ignition system of the contactless type of DIS-2 has disappeared, the need to adjust the ignition angle. To this end, the electronics uses a detonation sensor.

For the successful ignition of the depleted mixture, the LEAN BURN device requires better sparking. When using gasoline inappropriate quality, a nagar layer is formed on the ignition candle. If the candles are closed, the motor begins to twitch, stuck both when driving and in idle mode. Toyota is decided to replace ordinary candles on platinum spraying products. To obtain a more powerful spark in the candle design, two electrodes having a clearance of 1.3 mm are also introduced.

Interestingly: It is noted that when working on Toyotovsky engines 7a-Fe on a merry Russian production, expensive platinum candles are covered with a raid, do not produce the promised potential. Instead of the expected 60,000 kilometers, they pass only 5,000. The output was found by folk craftsmen. They use conventional spark plugs without expensive spraying having a gap of 1.1 mm. Before installation, the electrodes by 1.3 mm simply extension, increasing the clearance to improve the spark. If you use a 1.1 mm clearance, the LEAN BURN system does not save gasoline, its flow rate increases significantly. Wizards advise installed candles ngk. BKR5EKB-11 with divorced electrodes instead of recommended NGK BKR5EKPB-13.

Toyota company produces engines of this modification designed for the regular fuel. This is Japanese gasoline, its octane number corresponds to our unleaded AI-92. In contrast to the 92nd gasoline, the composition of AI-95 includes numerous additives, negatively affecting the spark plugs. Therefore, in the engine 7a-Fe it is recommended to fill gasoline AI-92.

Replacing the timing belt in the engine 7a Fe

The belt of the gas distribution mechanism of the 7A FE engine is designed to bring in motion and synchronization of rotation of the shafts - distribution and crankshaft. When it is cut, the cyclicity of the functions of the engine systems internal combustion Completely knocked down. At the same time there is a high probability of serious consequences leading to the overhaul of the vehicle.

In order to save the internal combustion engine and the car as a whole, it is recommended to check the technical condition of the timing belt. If it occurs, it is replaced.

In accordance with the recommendations of the automaker, change the timing belt in the 7A FE engine is needed after a run of 100,000 kilometers. Considering the conditions of operation of cars on complex domestic roads, experienced motorists They advise this much earlier - in 80,000 km.


Thanks to a large number step-by-step instructionsPlaced on the Internet in the form of detailed videos, these activities can be performed independently in the conditions of the garage. The basic condition is accuracy and accurate observance of the order of operations.

Algorithm for replacing the belt:

  1. Disconnect the battery terminals.
  2. Remove spark plugs.
  3. Remove the generator belt.
  4. Valve lid.
  5. Unscrew the fasteners of the top cover of the timing belt and remove it.
  6. Carefully inspect the status of the belt, whether there are no cracks on its surface and other damage.
  7. Remove the belt.
  8. Simultaneously with the belt are removed: tension and bypass rollers that should not have damage.
  9. If even the slightest scratches are noticed on the surfaces of the rollers, they are also subject to replacement.
  10. amena components are made to new nodes. Selected parts of the engine parts 7A-FE.
  11. Set new belt Timing, providing the necessary sagging.
  12. When fixing bolts, the recommended tightening torque is applied.
  13. Install the cover other nodes in the reverse sequence.

IMPORTANT: After connecting and tightening the battery terminals, it is desirable to leave a mark on top cover On the date of replacement of the timing belt and the number of kilometers traveled at this moment.

When developing the design of this engine is provided important moment - minimized the likelihood of a joint impact of pistons and valves with a possible breakpoint of the timing belt of the timing transmission mechanism. In this case, the possibility of bending valves is excluded. This significantly increases the level of reliability of the engine 7a.

Is the engine tuning possible - Toyota 7a Fe

To increase the dynamics of overclocking cars in the engine design, include a turbine. With the help of turbochargedv, the efficiency of the power unit is increasing, the car is better accepted from the spot. Such engine improvements will be useful with frequent trips through the city streets with complex conditions of movement in the Start Stop mode.

"A" (R4, belt)
Engines a series A in prevalence and reliability divide, perhaps, the championship with Series S. As for the mechanical part, it is generally difficult to find more competently designed motors. At the same time, they have good maintainability and do not create problems with spare parts.
Installed on Cars "C" and "D" (COROLLA / SPRINTER, CORONA / CARINA / CALDINA).

4A-Fe. - the most common engine series, without significant changes
released since 1988, has no pronounced constructive defects
5A-FE. - An option with a reduced working volume, which is still produced in Chinese Toyota plants for internal needs
7A-Fe. - Fresh modification with increased volume

In the optimal serial version 4a-Fe and 7a-Fe went to the Corolla family. However, being installed on Corona / Carina / Caldina line cars, they over time received the LEANBURN type nutrition system designed to combustion of depleted mixtures and helps save japanese fuel with a calm ride and traffic jams (more about constructive features - cm. in this material which model installed LB - ). It should be noted that the Japanese is pretty "podriad" to our ordinary consumer, many owners of these engines face
the so-called "problem of LB", which is manifested in the form of characteristic failures on medium turnover, the reason for which it is possible to establish and heal is not possible - is the low quality of local gasoline, or the problems in power and ignition systems (to the state of the candles and high voltage wires These engines are particularly sensitive), or all together - but sometimes the depleted mixture is simply not ignited.

Small additional minuses are a tendency to increased wear of camshaft beds and formal difficulties with adjusting the gaps in the inlet valves, although in general work with these engines is convenient.

"The engine 7a-Fe Leanburn is low-speed, and it is even a 3s-FE travelet due to the maximum of the moment at 2800 revolutions"

Outstanding the 7a-Fe Motor Low Turnover Dimensions in Leanburn is one of the common misconceptions. All civilian engines of the A series A "dugorbay" curve of torque - with first peak of N2500-3000 and the second to 4500-4800 rpm. The height of these peaks is almost the same (the difference is applied hardly in 5 nm), but the std engines are fine above the second peak, and LB is the first. Moreover, the absolute maximum of the moment in STD still turns out to be more (157 against 155). Now compare with 3S-Fe. The maximum moments of 7a-Fe LB and 3S-FE type "96 are 155/2800 and 186/4400 nm, respectively. But if you take the characteristic as a whole, then 3S-Fe with the same 2800 comes out at the time of 168-170 nm, and 155 nm - It gives up 1600-1900 revolutions around 1700-1900.

4A-GE 20V - Forced monster for small GT replaced in 1991 by the previous base engine of the entire series A (4a-GE 16V). To provide power in 160 hp, the Japanese used a block head with 5 valves per cylinder, system vvt. (For the first time, applying the variable phases of gas distribution on Toyota), Redline Tachometer for 8 thousand. Minus - such an engine will be inevitably stronger than "Ushatan" compared to the average server 4A-FE of the same year, since it was not originally bought in Japan for an economical and gentle ride. More serious requirements for gasoline ( high degree Compression) and to oils (drive Vvt), so it is intended primarily to someone who knows and understands its features.

With the exception of 4a-GE, the engines are successfully powered by gasoline with octane number 92 (including LB, for which the requirements are even softer). Ignition system - with a distributor ("TRABLARNY") for serial options and DIS-2 in late LB (Direct Ignition System, on one ignition coil for each pair of cylinders).

Engine5A-FE.4A-Fe.4a-Fe LB7A-Fe.7A-Fe LB4A-GE 20V
V (see 3)1498 1587 1587 1762 1762 1587
N (hp / at rpm)102/5600 110/6000 105/5600 118/5400 110/5800 165/7800
M (nm / at rpm)143/4400 145/4800 139/4400 157/4400 150/2800 162/5600
Compression ratio9,8 9,5 9,5 9,5 9,5 11,0
Gasoline (recommended)92 92 92 92 92 95
Ignition systemtrambl.trambl.DIS-2trambl.DIS-2trambl.
Nut valvenotnotnotnotnotyes**

Motors 4a-F, 4a-Fe, 5a-Fe, 7a-Fe and 4a-Ge (AE92, AW11, AT170 and AT160) 4-cylinder, in line, with four valves for each cylinder (two - intake, two - graduation ), with two high-location camshafts. 4a-ge engines are characterized by setting five valves for each cylinder (three inlets two graduation).

Engines 4a-F, 5a-F carburetor. All other engines have a fuel injection system with electronically control.

4a-Fe engines were performed in three versions, which differed from each other in the main design of intake and exhaust systems.

The 5a-FE engine is similar to the 4a-Fe engine, but differs from it with the sizes of the cylinder-piston group. The 7A-FE engine has small design differences from 4a-Fe. The engines omeize the numbering of cylinders, starting from the side opposite to the selection of power. The crankshaft is full-resistant with 5 root bearings.

Bearing liners are made on the basis of aluminum alloy and installed in the boring of the engine crankcase and the covers of the indigenous bearings. Drills executed in the crankshaft shaft serve to supply oil to connecting rod bearings, rods of rods, pistons and other parts.

The order of the cylinders: 1-3-4-2.

The head of the cylinder block, cast from the aluminum alloy, has transverse and arranged inlet and exhaust pipes arranged from opposite sides, composed with tent combustion chambers.

Spark plugs are located in the center of the combustion chambers. The 4a-F engine uses the traditional intake manifold design with 4 separate nozzles, which are combined into one channel under the flange of the carburetor fastening. The intake manifold has a liquid heating that improves engine pickup, especially when he warmed. The intake manifold 4a-Fe, 5a-FE has 4 independent connections of the same length, which, on the one hand, are combined with a common inlet air chamber (resonator), and on the other, they are joined with inlet channels of the cylinder head.

The intake manifold of the 4a-GE engine has 8 such nozzles, each of which is suitable for its inlet valve. The combination of the length of the intake nozzles with the phases of the engine gas distribution allows the use of an inertization phenomenon to increase the torque on the low and medium engine speeds. Exhaust and intake valves are mounted with springs having an uneven stepper step.

The distributional shaft, engine exhaust valves 4a-f, 4a-Fe, 5a-Fe, 7a-Fe is driven by a crankshaft using a flat-to-face belt, and the camshaft of the inlet valves is driven by distribution Vala Exhaust valves using gear gear. In the 4a-Ge engine, both shafts are driven by a spinning belt.

Switchgears have 5 supports located between the valve pushers of each cylinder; One of these supports is located at the front end of the cylinder head. Lubrication of supports and camshafts camshafts, as well as drive gears (for engines 4a-F, 4a-Fe, 5a-Fe), is carried out by a flow of oil, which comes through the oil channel, drilled in the center of the camshaft. The adjustment of the gap in the valves is carried out using the adjusting washers located between the cams and the valve pushers (in the twenty-fuel engines 4a-ge, adjustment spacers are located between the pusher and the valve terminal).

The cylinder block is cast from cast iron. It has 4 cylinders. The upper part of the cylinder block is covered with cylinder head, and the lower part of the block forms the engine crankcase in which it is installed crankshaft. Pistons are made of high-temperature aluminum alloy. On the bottoms of the pistons, deposits were made to prevent the piston meeting with Klpanans in VTM.

Piston fingers of 4a-Fe, 5a-Fe, 4a-F, 5a-F and 7a-Fe - FE - "fixed" type: they are installed with tension in the piston head of the connecting rod, but have a sliding fit in the piston buses. Piston fingers of the 4A-GE engine - "floating" type; They have a moving landing, both in the piston head of the connecting rod and in the piston buses. From axial offset, such piston fingers are fixed with retaining rings installed in the piston bosses.

The top coarsion ring is made of stainless steel (4a-F, 5a-F, 4a-Fe, 5a-Fe, and 7a-Fe engines) or steel (4a-ge engine), and the 2nd compression ring is cast iron. The oil slimming ring is made of conventional steel and stainless steel alloy. The outer diameter of each ring is somewhat larger than the diameter of the piston, and the elasticity of the rings allows them to tightly cover the walls of the cylinder when the rings are installed in the piston grooves. Compression rings prevent the gases breakage from the cylinder into the engine crankcase, and the oiling ring removes excess oil from the cylinder walls, preventing its penetration into the combustion chamber.

Maximum non-reduction:

  • 4a-Fe, 5a-Fe, 4a-ge, 7a-Fe, 4e-Fe, 5e-Fe, 2e ... ..05 mm

  • 2C ................................................... 0.20 mm

Toyotovsky power units of the series "A" were one of the best developments that companies allowed to get out of the crisis in the 90s of the last century. The largest volume was Motor 7A.

One should not be confused 7a and engine 7K. No related relationship these power aggregates do not have. DVS 7K was produced from 1983 to 1998 and had 8 valves. Historically, the "K" series began its existence in 1966, and the series "A" in the 70s. Unlike 7K, the engine series A developed as a separate direction of development 16 valve motors.

Engine 7 A has become a continuation of the improvement of 1600 cubic motor 4a-Fe and its modifications. The volume of the engine grew up to 1800 cm3, the power and torque increased, which reached 110 hp. and 156nm, respectively. The 7A FE engine was produced at the main production of Toyota Corporation from 1993 to 2002. The power units of the series "A" are still produced in some enterprises using licensed contracts.

A structurally power unit is made in an inline scheme of a gasoline four with two up-to-air distributive camshafts, respectively, the camshafts control the operation of 16 valves. The fuel system is made injector with electronically controlled and rubbed ignition distribution. Driver timber belt. When the valve belt is cut, it is not bent. The head of the block is made in the same way as the head of the 4A series engine block.

Official options for the improvement and development of the power unit are not. Supplied with a single number-letter 7A-FE index for configuration different cars Up until 2002. The successor of the 1800 cubic drive appeared in 1998 and had 1zz index.

Constructive modifications

The engine received a block with an increased vertical size, the changed crankshaft, the head of the cylinders, increased the course of the pistons while maintaining the diameter.

The uniqueness of the design of the engine 7a is to use a two-layer metal laying of the block head and a two-circuit crankcase. The upper part of the crankcase, which was performed from the aluminum alloy, was attached to the block and the gearbox body.

The lower part of the crankcase was made of steel sheet, and allowed it to dismantle it, without removing the engine. Motor 7A has improved pistons. In the groove outlooking Ring 8 holes are made to drain oil into the crankcase.

The upper part of the fastener cylinder block is made in the same way. 4a-Fe is allowed to use the head of the cylinder block from a smaller motor. On the other hand, the blocks of the blocks are not entirely identical, since the diameters of the intake valves with 30.0 were changed on the 7 A series, and the diameter of the outlet valves is left unchanged.

In this case, other camshafts provide greater opening of intake and exhaust valves of 7.6 mm versus 6.6 mm per 1600 cubic engine.

Changes were made to the design of the exhaust manifold to attach WU-TWC converter.

Since 1993, the fuel injection system has changed on the engine. Instead of simultaneous injection into all cylinders, a pairwise injection began to apply. Changes were made to the settings of the gas distribution mechanism. Changed the opening phase of the outlet valves and the closing phase of intake and exhaust valves. What made it possible to increase power and reduce fuel consumption.

Until 1993, the engine starting system was used on the engines, which was used on the 4a series, but then, after finalizing the cooling system, refused to be refused. The engine control unit is left as the same, except for two additional options: The ability to test the system and detonation controls, which have been added to the ECD for a 1800 cubic engine.

Specifications and reliability

7a-Fe characteristics have met different. Motor had 4 versions. As a basic configuration, a motor capacity of 115 hp was produced. and 149 nm torque. SAMI powerful version DVS was produced for Russian and Indonesian markets.

She had 120 hp and 157 nm. For the American market, the "clamped" version was also produced, which was given only 110 hp, but with an increased to 156 nm torque. The weakest version of the engine squeezed 105 hp, as well as the 1.6 liter motor.

Part of the engines has the designation 7a Fe Lean Burn or 7a-Fe LB. This means that the engine is equipped with a depleted mixture combustion system, which first appeared on Toyota engines in 1984 and hidden under the T-LCS abbreviation.

Linben technology allowed to reduce fuel consumption by 3-4% when driving around the city and just over 10% when driving on the highway. But this, the system reduced the maximum power and torque, therefore evaluating the effectiveness of the use of this constructive refinement.

Engines equipped with LB, mounted on Toyota Karina, Caldina, Corona and Avensis. Corolla cars have never been completed with engines with such a fuel economy system.

In general, the force aggregate is quite reliable and not soared in operation. Resource to first overhaul Superior 300,000 km run. During operation, attention must be paid electronic devicesserving engines.

The overall picture spoils the Linburn system, which is very arrogant to the quality of gasoline and has an increased cost of operation - for example, requires an ignition candle with platinum inserts.

Major faults

The main malfunctions of the engine operation are associated with the functioning of the ignition system. The splitting system of the spark is implied by wear of the bearings of the traver and gear gear. As wear is accumulated, it is possible to shift the moment of the spark that entails or to the ignition pass or to the loss of power.

Very demanding of the cleanliness of high-voltage wires. The presence of contaminants causes a sample of sparks on the outer part of the wire, which also leads to engine troop. Another cause of trimming is the wear or pollution of the spark plugs.

Moreover, the system is affected by the system and the NAGA, which is formed when using waterproof or iron-sulfur fuel, and the external contamination of the surfaces of the candles, which leads to a breakdown on the cylinder head housing.

The fault is eliminated by replacing candles and high-voltage wires included.

As a malfunction, engines equipped with the LEANBURN system are often recorded, in the 3000 rpm area. The fault occurs because there is no spark in one of the cylinders. Caused by usually wear platinum.

With a new high-voltage set, it may be necessary to clean the fuel system to eliminate contaminants and restore the injectors. If it does not help, then the malfunction can be found in the Esud block, which may require flashing or replacement.

The engine knock is due to the operation of the valves requiring periodic adjustment. (No less often 90,000 km). The piston fingers in the engines 7a are pressed, so the additional knock on this engine element is extremely rarely fixed.

Elevated oil consumption is laid constructively. Engine 7A FE technical passport Indicates the possibility of natural flow to 1 l motor oil per 1000 km run.

That and technical fluids

As recommended fuel, the manufacturer's plant indicates gasoline with an octane number not lower than 92. The technological difference should be taken into account in the definition octane number According to Japanese standards and the requirements of GOST. It is possible to use non-determined 95 fuel.

Motor oil is selected by viscosity in accordance with the operating mode of the car and the climatic features of the region of operation. Most fully overlaps all possible conditions synthetic oil SAE 5W50 viscosity, however, for everyday average exploitation, there is enough viscosity oil 5W30 or 5W40.

For a more accurate definition, refer to the instruction manual. Capacity of the oil system is 3.7 liters. When replacing a filter change on the walls of the internal channels of the engine, up to 300 ml of lubricant can remain.

Engine maintenance is recommended to produce every 10,000 km of run. In case of severe operation, or using a car in highland, as well as at more than 50 engine launches at temperatures below -15С, it is recommended to reduce the service period by half.

The air filter changes as of state, but at least 30,000 km of mileage. The timing belt requires replacement regardless of its state every 90,000 km of run.

NB. When passing, it may require a reconciliation of a series of engine. The engine number must be located on a platform located in the rear of the engine under the outlet at the generator level. Access to this area is possible with a mirror.

Tuning and engine refinement 7A

The fact that the internal combustion engine was originally designed based on the 4a series, allows you to use a block of a block from a smaller engine and modify the 7A-FE motor up to 7a-GE. Such a replacement will give an increase of 20 horses. When performing such a finalization, it is also desirable to replace the original oil pump on the unit from 4A-GE, which has greater performance.

Turbization of the 7A series engines is allowed, but leads to a decrease in the resource. Special crankshafts and inserts for chance are not produced.

String (10) "Error Stat" String (10) "Error Stat"

In fact, we have the legendary 4a motor with an increased block height and piston stroke, as a result of which the volume rose to 1.8 liters, the long-time design of the engine has added excellent traction on low revs.

Gasoline atmospheric engine 7a-Fe

Design features

The 7A FE engine has the following features of the design of nodes and mechanisms:

  • 16 valves, 4 per cylinder;
  • The camshafts are laid into the sliding bearings inside the GBC;
  • Only one camshaft has a link with a belt;
  • Inlet camshaft is activated from the graduation;
  • To prevent the screen, the camshaft gear must be placed;
  • V-shaped valve location;
  • Long-terrestrial engine design;
  • EFI injection;
  • Gasket cylinder head metal
  • Installation of different camshafts, depending on the vehicle in which the motor is worth;
  • Not floating piston finger.

The actuator of the Motor camshafts of the A series A, in the photo it is clear that rotation from the crankshaft is transmitted to the gear of the outlet camshaft, after which it is transmitted to the inlet shaft

The design of the motor is simply and reliable, there are no phase students and adjustments of the geometry of the intake manifold, which is thought out by the Japanese the GRM drive, even when the belt is broken, does not heat the valve.

7A-FE service regulations

This engine Requires systematic maintenance within the specified time:

  • Engine oil is recommended to change together with the filter every 10,000 mileage;
  • Fuel and air filters are recommended to change after 20,000 km;
  • Candles require attention and replacement to reach 30 thousand km;
  • Adjustment of valve gaps is required every 30,000 mileage;
  • The inspection of hoses and the discovery bubbles requires systematic monthly control;
  • Graduation collector will require a replacement after 100,000 km;
  • Replacing the timing belt is recommended every 100 thousand km, and its inspection every 10,000 km;
  • Pomp serves about 100,000 km.

Overview of faults and ways to repair

By virtue of structural features The 7A-FE motor is subject to the following "diseases":

A knock inside the DVS1) Wear a pair of friction piston

2) Violation of thermal valve gaps

3) wear of the cylindrophone group (the impact of the piston on the sleeve during the smoker)

1) replacement of fingers

2) adjustment of gaps

Improving the flow of oilFault piston rings Or oil dialing CapsReplacing rings and caps
Motor starts and stallsCourse related S. fuel system Or IgnitionReplacement fuel filter, fuel pump, traver inspection, spark plug check
Floating revs1) zamor nozzles, throttle valve, Valve RHX

2) insufficient pressure in the fuel system

1) cleaning nozzles, choke and valve RXX

2) Replacing the fuel pump or checking the fuel pressure regulator

Increased vibration1) Zavo injectors, Ignition Candle Fault

2) Different compression in the cylinders

1) Cleaning or replacing candles and nozzles

2) Diagnostics of compression, checking leaks

Problems with engine start and with idle associated with the development of the engine temperature sensors. Lambda probation breakage entails increased flow Fuel and as a result, reducing the scene resource. Motor overhaul can make it yourself with tools. The operating manual describes the entire list of possible actions with DVS.

List of car models in which 7a-Fe was installed:

Toyota Avensis

  • Toyota Avensis
    (10.1997 — 12.2000)
    hatchback, 1 generation, T220;
  • Toyota Avensis
    (10.1997 — 12.2000)
    Universal, 1 generation, T220;
  • Toyota Avensis
    (10.1997 — 12.2000)
    Sedan, 1 generation, T22.

Toyota Caldina.

  • Toyota Caldina.
    (01.2000 — 08.2002)
    restyling, wagon, 2 generation, T210;
  • Toyota Caldina.
    (09.1997 — 12.1999)
    Universal, 2 generation, T210;
  • Toyota Caldina.
    (01.1996 — 08.1997)
    restyling, wagon, 1 generation, T190.

Toyota Carina.

  • Toyota Carina.
    (10.1997 — 11.2001)
    restyling, sedan, 7 generation, T210;
  • Toyota Carina.
    (08.1996 — 07.1998)
    sedan, 7 generation, T210;
  • Toyota Carina.
    (08.1994 — 07.1996)
    Restyling, sedan, 6 generation, T190.

Toyota Carina E.

  • Toyota Carina E.
    (04.1996 — 11.1997)
    restyling, hatchback, 6 generation, T190;
  • Toyota Carina E.
    (04.1996 — 11.1997)
    restyling, wagon, 6 generation, T190;
  • Toyota Carina E.
    (04.1996 — 01.1998)
    restyling, sedan, 6 generation, T190;
  • Toyota Carina E.
    (12.1992 — 01.1996)
    Universal, 6 generation, T190;
  • Toyota Carina E.
    (04.1992 — 03.1996)
    Hatchback, 6 generation, T190;
  • Toyota Carina E.
    (04.1992 — 03.1996)
    Sedan, 6 generation, T190.

Toyota Celica.

  • Toyota Celica.
    (08.1996 — 06.1999)
  • Toyota Celica.
    (08.1996 — 06.1999)
    restyling, coupe, 6 generation, T200;
  • Toyota Celica.
    (10.1993 — 07.1996)
    coupe, 6 generation, T200;
  • Toyota Celica.
    (10.1993 — 07.1996)
    Coupe, 6 generation, T200.

Toyota Corolla

Europe

  • Toyota Corolla
    (01.1999 — 10.2001)
    Restyling, wagon, 8 generation, E110.
  • Toyota Corolla
    (06.1995 — 08.1997)
    restyling, wagon, 7 generation, E100;
  • Toyota Corolla
    (06.1995 — 08.1997)
    restyling, sedan, 7 generation, E100;
  • Toyota Corolla
    (08.1992 — 07.1995)
    Universal, 7 generation, E100;
  • Toyota Corolla
    (08.1992 — 07.1995)
    Sedan, 7 generation, E100.

Toyota Corolla Spacio.

  • Toyota Corolla Spacio.
    (04.1999 — 04.2001)
    restyling, minivan, 1 generation, E110;
  • Toyota Corolla Spacio.
    (01.1997 — 03.1999)
    Minivan, 1 generation, E110.

Toyota Corona Premio.

  • Toyota Corona Premio.
    (12.1997 — 11.2001)
    restyling, sedan, 1 generation, T210;
  • Toyota Corona Premio.
    (01.1996 — 11.1997)
    Sedan, 1 generation, T210.

Toyota Sprinter Carib.

  • Toyota Sprinter Carib.
    (04.1997 — 08.2002)
    Restyling, wagon, 3 generation, E110.

Motor tuning options

The 7A-FE engine is not designed for tuning, but the craftsmen put on the block 7a head from the 4a-GE engine and it turns out 7a-ge, but to put a little head, you still need to make a selection of pistons, tuning the fuel-air mixture, and the Tuka ECU does not allow a thin setting .

However, an atmospheric tuning is possible in the following way:

  • Increasing the degree of compression due to the GBC;
  • Modernization of the GBC, an increase in the diameter of the valves and the saddle;
  • Replacing the fuel pump and camshafts;
  • Installing the head of the cylinder block from Motor 4a Ge.

You can also make SWAP motor. Acquire contract Engine It does not work, the choice is huge: 3S-GE, 3S-GTE, 4A-GE, 4A-GZE. It is recommended to buy motors with mileage no more than 100 thousand km. And carefully check their condition before buying.

The list of modifications of the DVS

7A FE modifications were about 6, they differed in power, torque and work in different modes. So done because the engines were installed on different cars, different masses and sizes. Therefore, on some cars there were few native 105 hp And Toyota engineers had to boost cars using the camshafts and brain programs of the engine:

  • Maximum torque, n * m (kg * m) at rpm:
    • 150 (15) / 2600;
    • 150 (15) / 2800;
    • 155 (16) / 2800;
    • 155 (16) / 4800;
    • 156 (16) / 2800;
    • 157 (16) / 4400;
    • 159 (16) / 2800;
  • Maximum power, horsepower: 103-120.

Specifications 7A-FE 105-120 hp

The engine consists of the simplest cast-iron block and the aluminum head, between them, the grinding of the metal bottle, the GDM drive is carried out with a belt. The two-camshaft layout of the head made it possible to implement the GRM mechanism without the use of rocker. When the belt is cut, the motor does not oppress the valve, such motors are called skimming.

The technical characteristics of the 7A FE engine correspond to the following tabular values:

Engine volume, ccmm1762
Maximum power, hp103-120
Maximum torque, N * M (kg * m) for rpm. / Min.150 (15) / 2600
Used fuelGasoline AI 92-95
Fuel consumption, l / 100 kmClaimed: 4,6-10.

Real: 8-15

engine's type4-cylinder, 16-valve, DOHC
Cylinder diameter, mm81
Piston stroke, mm85,5
Compression, atm10-13
Engine weight, kg109
Ignition systemDraver, individual coil
What oil pour into a viscosity engine5W30
Which oil is better for the engine by manufacturerToyota.
Oil for 7A-Fe in compositionSynthetics

semi-synthetic

mineral

Motor oil volume3 - 4 l depending on the car
Working temperature95 °
RF resourceannounced 300,000 km

real 350000 km

Adjustment of valveswashers
Intake manifoldAluminum
Cooling systemforced, antifreeze
Volume of oh5.4 L.
water pumpGMB GWT-78A 16110-15070, AISIN WPT-018
Candles on 7a-FeBCPR5EY NGK, CHAMPION RC12YC, BOSCH FR8DC
Candle clearance0.85 mm
Timing beltBelt Timing 13568-19046.
The order of the cylinders1-3-4-2
Air filterMANN C311011.
Oil filterVIC-110, MANN W683
Flywheel6 bolt mount
Fastening bolts flywheelM12x1.25 mm, Length 26 mm
Valve stem sealsToyota 90913-02090 intake

Toyota 90913-02088 prom

Thus, the 7a-Fe engine is a benchmark of Japanese reliability and unpretentiousness, it does not oppress the valve, and its power reaches 120 horsepower. This engine is not intended for tuning, so increase the power will be quite difficult and the forcing will not bring a significant result, but it is beautiful in everyday use and in systematic services will not bring hassle to its owner.

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