Caution: The engine or engine oil may be hot and cause burns. Be careful when removing or installing any parts.
1. Make sure the battery is fully charged. If necessary, charge the battery;
2. Warm up the engine to normal operating temperature.
3. Stop the engine and wait 10 minutes.
4. Remove the fuel pump relay.
5. Disconnect sockets of coils of ignition.
6. Remove the four ignition coils (L15A), four front ignition coils (L1ZA).
7. Remove the four spark plugs (L15A), four front spark plugs (L1ZA).
8. (L15A) Disconnect the rear ignition coil connectors.
9. Establish the union of a compressometer in an aperture of a candle of the first cylinder.
10. Fully depress the accelerator pedal.
11. Turn the crankshaft with the starter and record the maximum pressure value at the end of the compression stroke.
12. Carry out the described check for each cylinder. Rotate the crankshaft about the same number of revolutions.
Pressure at the end of the compression stroke:
- nominal - 980 kPa
- minimum - 824 kPa
Maximum difference between cylinders - 200 kPa
If the maximum pressure in one of the cylinders is reduced or the pressure difference in the different cylinders exceeds the set value, pour a small amount of clean engine oil into the cylinder and check the pressure again.
- If the pressure has risen, this may indicate wear on the piston, piston rings or cylinder and the need to repair the cylinder-piston group.
- If the pressure does not rise, this indicates a malfunction of the valves and the need for repair.
- If the pressure in two adjacent cylinders remains low, this indicates a blown cylinder head gasket or head deformation.
13. Remove the compression gauge.
14. Install the fuel pump relay.
15. Screw in the spark plugs.
- Tightening torque - 15 - 22 Nm
16. Install ignition coils.
17. Connect a socket of coils of ignition.