Check, adjusting thermal gaps on the engine. Adjusting Valves Daewoo Matiz Daewoo Matiz Gas

Valves in the engine of any car need to adjust and Daewoo Matiz not an exception. On any engine, this process has its own characteristics and difficulties. Fortunately, on a standard 0.8 engine Matiza, everything is done quite easily and you can cope with your own.

What is the engine valves and why regulate them

Normal four-stroke engine internal combustion It consists of a variety of systems, but its main part is a block of cylinders and a gas distribution mechanism. The cylinder is injected with fuel, it is ignited, the rapid combustion presses on the piston.

The fuel (more precisely, the ready-made fuel and air mixture) enters the cylinder through the hole. There is another hole, through it from the cylinder traffic fumes. And these holes are closed with valves - intake and graduation.

But the engine during operation heats up to huge temperatures in hundreds of degrees and, as we know from the school course of physics, there is a thermal expansion - the valves are becoming a little more. Therefore, the Cold Engine valves should have gaps that are clearly defined by the manufacturer so that during operation when the valve does not stuck and closes the holes tightly without cracks.

When need to adjust the valve

According to the Matiz regulation, the adjustment should be carried out every 20,000 kilometers of the mileage. But many are tightened with this process up to 30,000 km and more than what should not be done. In addition to directly run, it is necessary to test this procedure and malfunctions in the engine.

A characteristic feature that the gaps need to be adjusted is always a permanent knock out of the hood. It means that the slots even with a heated engine are too large and the valve during the course knocks. But there is a reverse situation when the clearance is too small, then the engine begins to "TRAIN". Although, in the case of Daewoo Matiz, the engine "two", since it is only three cylinders.

For inexperienced motorists it is worth clarifying that "Trojections" (or "Twin" in our case) means that one of the cylinders does not work. It is heard both by the changed engine sound and on a well-visible drop in power.

Preparation for adjustment

To independently set the gaps, you do not need to be an experienced car mechanic.

Just only the instructions (this, but does not hurt and official paper), a set of tools (hexagon, screwdrivers, wrench and a set of special flat probe).

All work is carried out only on completely cold engines. First of all, you need to remove the matiz cylinder cover. To do this, you only need to disconnect the ventilation hose and unscrew several bolts using a hexagon to 5. Probably, it will not be so simple, the bolts can be clogged and "fuck", in this case you have to attach more strength or use the WD-40 miracle tool. After removing the lid, at the same time, check the rubber gasket if it has damage - it is time to replace it. After that, you will have to remove the timing of the timing unit.

How to adjust valves

Now you can proceed directly to the adjustment, it is performed in a special way, in detail the procedure for work is scheduled in the official manual Matiz. Using a wrench (you can also lift in front of the car, turn on the 5th gear and hand to scroll through the wheels), you need to focus on the label on the crankshaft, combine it with a number 0. In such a position, the gaps are checked:

• Both valves of the first cylinder;
• Only ink valve second;
• Only the exhaust valve of the third.

Standard values \u200b\u200bthat must have Daewoo Matiz: 0.15 for inlet and 0.32 for graduation. These values \u200b\u200bcan be installed with an error of 0.02, which is relevant, since the dipstick is almost impossible to find, there are only probes by 0.3. The clearance is tested only between the nut and the valve rod. If it does not correspond to the values, you need to adjust with a small leaf of the locknut, while holding, while the screw. Then you need to turn the crankshaft exactly 360 degrees (again focusing on the labels) and adjust the two remaining valves.

There is another way to adjust, simpler and not requiring removal of the timing cover. But this method is not according to the instructions, it differs less accuracy and can only be done on his risk. In this case, you need to turn the crankshaft and look at the valve cams, the maximum gap will be when the cam is directed down, in this position and adjusts.

Before adjusting the thermal gaps on the valves, before they need to be reached. The disassembly begins with removing the block of ignition coils and throttle node.

To dismantle block ignition coils First you have to move the rubber protective caps from its conclusions, and after disconnecting the tips of the candle high voltage wires. Then the head "on 10" using the extension cable, it is necessary to unscrew the three fastening bolts that lock the coil block to the bracket of the cylinder head cover. The unit can be removed.

To remove throttle knot on Daewoo Matiz 1.0 l, you must first disconnect the wire terminal from the "minus" output rechargeable battery. A slotted screwdriver is weakened by a tightening of 2 clamps, fixing the air duct with a throttle node and cover covers air filter. Further remove the air duct from the nozzles of the filter cover and the throttle node and take the air duct to the side. Disconnect the drive cable throttle valve From the drive sector.

Now you need to disconnect the block in which the wires are placed, from the throttle connector. To do this, you just need to push the pad to the lock, located below. Followed two nuts (key "10) on upper mount throttle knot. You can already remove the cable bracket for the throttle drive with the inlet pipes.

Two screws are turned on to top off (hexagon "on 5"), holding the lower fastening of the throttle assembly. The throttle node moves with studs. The adsorber blowing hose is disconnected from the fitting on the throttle housing and the throttle assembly itself is removed. Do not forget to remove the sealing gasket of the throttle knot flange. Note that in Daewoo Matiz 0.8 liters, the throttle node is removed in a small way.

After removing the throttle assembly, a dismantling queue was established top cover drive timing belt . Squeezing the ends of the hose of the vacuum brake reinforcement fastening of the vacuum improduction with the vacuum hose from the inlet pipe vacuum amplifier Brakes, clamp shift on the hose. Now with a connecting tube you can remove the cutting hose. Further, the cylinder head cover covers the crankcase ventilation hose. The hexagon "on 5" turns out the screw fastening of the inlet pipeline with a connecting tube bracket.

On the subsequent step, disconnect the holder of the wiring harness from the bracket. For this purpose, the holder of the wire holder, which goes to the engine control system, is pretty compress a screwdriver. We turn around the head "on 10" fastening the connecting tube bracket. The connecting tube is assigned to the side without disconnecting the hose of the vacuum brake amplifier from it. We turn over the hexagon "on 5" eight screws fastening the cylinder head cover. Now you can dismantle the cover of the head of the cylinder block.

Remove dirt shield connected to the arch right-hand wheel. To do this, dismantle the right front wheel. From the bottom of the car with a cruciform screwdriver through a hole in the front stretcher turn the screw of the lower fastening of the shield. Head "on 10" turn the nuts of the upper and frontal mounting of the shield. All - the dirt shield is released.

Adjusting thermal gaps.

After removing the panel on Daewoo Matiz 1.0, the thermal gaps are already probable. For this, the piston of the first cylinder in the NTT is installed at the end of the compression tact. To achieve this, turn crankshaft Clockwise (head to "17") for the pulley fastening bolt until the same time is compiled as a label in the form of a crankshaft pulley with a digit "0" on the bottom cover of the timing belt. You need to look, so that the label on the gear pulley distribution Vala It was placed opposite the label in the form of a triangle on the rear lid of the timing belt. Having achieved this position of the crankshaft can already be inspected and adjust the valve gaps in the following order:

Intake and exhaust valves of the first cylinder;

Inlet valve of the second cylinder;

The outlet valve of the third cylinder.

Flat probe check the thermal gap between the valve terminal and the adjusting screw. With all this, the dipstick should move into the gap with a little effort. The magnitude of the gap should be in the permissible boundaries of 0.32 ± 0.02 mm for exhaust valves and 0.15 ± 0.02 mm for intake.

If the value of the thermal gap does not coincide with valid, then the tightening of the lock nut weakens with the key "to 12", with all this while holding the adjusting screw. Delay the screw is more convenient than the slotted screwdriver. To reach the desired gap, you need to stick the probe between the adjusting screw and the valve terminal, and then turn the screw with a screwdriver to suitable values. After - tighten the locknut, with all this, the adjusting screw is held with a screwdriver. At the end of the adjustment, you need to double all the gaps again.

We continue the adjustment. Turn the crankshaft 360 ° clockwise. With all this, the blue label of the gear pulley of the camshaft should set up opposite the triangular mark on the rear lid of the timing belt. In this position of the crankshaft, we check and as needed adjusting the gaps of subsequent valves:

Graduation second cylinder;

Inlet third cylinder;

Inlet and graduation 4th cylinder.

After the termination of the thermal valve gaps on the Daewoo Matiz 1.0 l, all removed nodes and parts are installed in the revolving sequence.

Symptoms:docks in the engine, the engine "Troit".

Possible reason:the thermal gaps of intake and exhaust valves are impaired.

Instruments: Set of wrench, heads, screwdriver with flat blade, screwdriver with cruciform blade, passatia.

Note. Testing and adjusting thermal gaps in the valve drive should be made on a cold engine.

5. Slide the fastening clamp of the loss supply hose from the exhaust pipe to the vacuum hose amplifier, compressing the clamps of the passage.

6. Disconnect the cutting hose from the connecting tube.

7. Disconnect the crankcase ventilating hose from the fitting on the CPC cover.

8. Unscrew the fastening screw of the connecting tube bracket and the inlet pipeline using the hexagon "on 5".

9. Squeeze the motor control of the motor control system holder, using a screwdriver.

10. Remove the engine harness holder of the engine control system from the bracket.

11. Unscrew the fastening nut of the connecting tube bracket using the "10" head.

12. Take to the side of the connecting tube.

Note. Do not disconnect from the connecting tube the hose of the vacuum brake amplifier.

13. Unscrew the eight fastening screws of the cylinder head cover.

14. Remove the CBC cover.

15. Remove the dirt shield located in the arc of the right front wheel.

16. Turn the crankshaft clockwise to the combination of the label-cutout, located on the crankshaft pulley, with the number "0" located on the bottom cover of the drive belt of the gas distribution mechanism. Pay attention to the label on the camstered pulley: it must be located opposite the label on the rear lid of the timing belt (use the head "on 17").

Note. In this position of the crankshaft, an exclusively intake and exhaust valve valves of the first cylinder, the inlet valve of the second cylinder, the exhaust valve of the third cylinder is performed.

17. Check thermal clearance Between the valve terminal and the adjusting screw using a flat probe (the dipstick should move in a slight force; the gap should be: 0.13-0.17 millimeters - for intake valves; 0.30-0.34 millimeters - for exhaust valves) .

Note. Follow the instructions below, if the size of the gaps exceed the maximum allowable values.

18. Lightly loosen the tightening of the lock nut using the 12 "wrench (do not allow the adjusting screw to turn the screw to the screw with a slotted screwdriver).

19. Insert the probe between the valve terminal and the adjusting screw, and then rotate the screw screw until the clearance takes dimension values \u200b\u200b(see paragraph 17).

Daewoo Matiz compact small trays are known primarily by their efficiency, which means that low operational expenses. But in order for the technical potential of the machine to remain at the proper level, it is necessary to conduct a periodic inspection and adjustment of the settings of the GDS mechanisms.

When you need adjustment of valves on the car Daewoo Matiz and why?

Almost any engine through a certain number of worked motoes or kilometers passed requires adjustment of the gaps between the rocker and the valve rod. Regulations technical work Matiz Matiz service provides for such events every 20,000 km.

According to experts, valve adjustment on Daewoo Matiz Need due to the following factors:

• increased thermal gap causes a decrease in lifting height, and hence the conduction section, as a result of which the high-quality filling of the cylinder of the combustible mixture or air is reduced;
• reduced gap helps to disrupt the tightness of the landing of the valve in the saddle, which directly affects compression and causes burning chamfering parts;
• an increase in the gap in the mechanisms implies the deterioration of cylinders from gases and makes an infallible process of combustion of the mixture.

Violation of technological sizes in the GDM mechanisms leads to the wear of valve rods and seats of parts. Nagar deposition and associated faults of spring structures leads to a violation of the working cycle of the power plant.

Determine the moment when valve adjustment is required car DEU. Matiz will help the following signs:

• power drop;
• ringing knock in the Tyrrh area;
• interruptions B. dVS work;
• periodic cotton in the intake or graduation path.

The presence of listed symptoms require immediate interference, otherwise the breakdowns associated with the replacement of the GDM assemblies will need significant financial influxers.

Preparatory work

First of all, you need to remember that all adjustment works are performed on a cold engine. Now complete the set of the required tool:

• a set of horn keys;
• screwdriver kit;
• set of heads;
• passatia;
• set of imbus keys;
• set of measuring probes.

The procedure for adjusting the gaps requires a number of preparatory activities, because it will not be able to get to the GDO knots. First of all, you should disconnect the minus wire of the AKB.

Removing the air filter hull

The process consists of several transitions:

1. Using a flat screwdriver, weaken the coat fastening clamp.
2. Disconnect the filter nozzle from the duct.
3. For the Matiz Matiz 0.8 l disconnect the shoe of the motor control system and the air temperature sensor, remove the hose from the filter housing.
4. Head to "10" unscrew the three bolts of fastening the filter housing to the air intake and remove them.
5. Raise the housing with air intake and resonator and output two pins from rubber pillows.
6. Dismantle the node.

Disassembling block of ignition coils

The following procedure, without which the valve adjustments on the Daewoo Matiz is not possible, is performed according to the scheme:

1. Press the lock of the shoe bundle control of DVS.
2. Remove the block from the ignition coil knot.
3. Sliding the rubber caps from the conclusions of the coil block, disconnect the high voltage wires.
4. Using the head to "10", unscrew three bolts of fastening the coils and the bracket cover of the CHC.
5. Remove the ignition coil knot.

Dismantling throttle

The technological map of this process includes the following work:

1. Disconnect the ventilation tube of the crankcase from the duct nozzle.
2. Disconnect the hose from the air filter housing and remove the air duct.
3. Disable the wire terminals from the XX regulator (for Matiz 0.8 l).
4. Disconnect the wires from the throttle position sensor.
5. From the expansion tank to drain Tosol to the MIN mark.
6. Passage to squeeze the clamps of the feed hoses coaching the throttle blocks and disconnect them.
7. Hexagon reveal the four fastener bolts of the throttle block and the intake manifold.
8. Remove the throttle assembly assembly.

Latest preparations

After the implementation of the items described above, you need to remove upper cover timber drive timing. To do this, dismantle the liners from the right front arch wheel and unscrew the four bolts of the cover of the cover by a wrench on "10".

Before the direct adjustment of the valves on the car, Daewoo Matiz remains several uncomplicated technological operations:

1. Passage squeeze the edges of the hose clamp of the liquefaction supply to the vacuum amplifier and move it further along the hose.
2. Remove the vacuum hose.
3. Remove crankcase ventilation hose from hbz cap fittings.
4. Using the hexagon on the "5" screw the screw of the intake pipeline bracket.
5. Squeeze the petals of the wiring control system of the DVS control system with a screwdriver and disconnect the harness from the bracket.
6. Unscrew the head on the "10" bolt fastening the connecting pipe bracket and take it to the side.
7. Unscrew 8 bolts of fastening the CHC cover using a hexagon on "5" and dismantle it.

How are the adjustment of the valve mechanism gaps on Daewoo Matiz?

We first find out that for inlet valves, the gap is 0.13-0.17 mm, and for the graduation - 0.3-0.34 mm. The probability of the required size should be moved in the interval with a slight force. Now you can proceed to adjustment works in stages:

1. Head to "17" clockwise Turn the crankshaft before matching the tag on the pulley with the number "0" on the bottom cover drive belt Timing.
2. In this position, the gaps of the intake and exhaust mechanism of the 1st cylinder, as well as the inlet 2nd and graduation 3rd cylinder, are corrected.
3. In the case of deviations from the recommended dimensions, it is necessary to loosen the control of the wrench to "12", while while holding the adjusting screw with a slotted screwdriver.
4. Insert the probe into the gap and adjust the engine valve mechanism by spinning / unscrewing the adjusting screw with a screwdriver before obtaining the desired dimensional values. After that, tighten the lock nut while holding the screw with a screwdriver from turning.
5. Turn the shaft to 360 ° so that the blue label on the camshaft pulley coincided with the triangular label on the bottom cover of the timing belt.
6. Check and adjust the gaps of the following valve mechanisms: the outlet 2nd and intake 3rd cylinders, as well as the inlet and exhaust 4th cylinder.

After completing the adjustment work, all dismantled nodes and aggregates are installed in the reverse order.