Mazda 3 since 2003
1. Operation and maintenance of the car
2. Engine
2.1. General description of new engines of the L8, LF and L3 models
2.2. Mechanical part of engines
2.3. Appendix 1
2.4. Appendix 2
2.5. Appendix 3
2.6. The Z6 engine – a mechanical part
2.6.1. Check of a belt of the drive of auxiliary units
2.6.2. Check of thermal gaps in the mechanism of the drive of valves
2.6.3. Check of a compression
2.6.4. Removal and installation of a chain of the drive of the mechanism of gas distribution
2.6.5. Replacement of laying of the block of cylinders
2.6.6. Replacement of a forward epiploon of a bent shaft
2.6.7. Replacement of a back epiploon of a bent shaft
2.6.8. Removal and installation of the engine
2.7. Lubrication system
2.8. Cooling system
2.9. System of an admission
2.10. Fuel system
2.11. System of production of the fulfilled gases and system of decrease in toxicity
2.12. System of ignition
2.13. Control system
2.14. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 








2-6-3-proverka-kompressii.html

2.6.3. Check of a compression

ATTENTION
The hot engine can become the reason of serious burns.
You watch to getting burn at removal and installation of elements of the engine.

Make sure that the rechargeable battery is completely charged.
Warm up the engine up to the normal working temperature.
Stop the engine and let's it cool down within about 10 min. to cool system of release.
Remove the relay of the fuel pump.
Remove the air filter assembled.
Remove ignition coils.
Remove all spark plugs.
Measure a compression as follows.

Установка компрессометра в отверстие свечи зажигания
Fig. 2.251. Installation of a kompressometr in a spark plug opening


Establish компрессометр in an opening of a spark plug (fig. 2.251).
Completely open a butterfly valve.
Turning the engine a starter measure a compression.
Compression:
The standard – 1470 kPa (250 min.-1);
At least – 1029 kPa (250 min.-1);
The maximum difference between cylinders – 196.1 kPa.
Execute the first three operations for all cylinders.
If the size of a compression is less than minimum value or the compression in one of cylinders differs from a compression in other cylinders on 196,1 kPa or more, execute the first three gulf a small amount of engine oil in openings of spark plugs.
If the compression rose after filling of engine oil, then wear or damage of a piston ring or surface of the cylinder is possible.
If the compression did not rise, then jamming of valves, a leaky prileganiye of valves or leak through laying of a head of the block of cylinders is possible.
In both cases nebkhody repair of the engine.
Establish spark plugs.
Install the ignition coil.
Install the air filter assembled.
Install the relay of the fuel pump.

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2.6.2.1. Adjustment of thermal gaps in the mechanism of the drive of valves
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2.6.4. Removal and installation of a chain of the drive of the mechanism of gas distribution