Warning: The engine or engine oil may be hot and cause burns. Use caution 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. Turn off the engine and wait 10 minutes.
4. Remove the fuel pump relay.
5. Disconnect the ignition coil connectors.
6. Remove four ignition coils (L15A), four front ignition coils (L13A).
7. Remove four spark plugs (L15A), four front spark plugs (L1АЗ).
8. (L15A) Disconnect the rear ignition coil connectors.
9. Install the compression tester nipple into the spark plug hole of the first cylinder.
10. Fully depress the accelerator pedal.
11. Turn the crankshaft with the starter and record the maximum value of the pressure at the end of the compression stroke.
12. Perform the described check for each cylinder. Turn the crankshaft approximately the same number of revolutions.
End of compression stroke pressure:
- nominal - 980 kPa
- minimum - 824 kPa
Maximum difference between cylinders is 200 kPa
If the maximum pressure in one of the cylinders is low or the pressure difference between 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 increased, this may indicate wear of the piston, piston rings or cylinder and the need for repair of the cylinder-piston group.
- If the pressure does not rise, this indicates that the valves are faulty and require repair.
- If the pressure in two adjacent cylinders remains low, this indicates a blown cylinder head gasket or a warped cylinder head.
13. Remove the compression gauge.
14. Install the fuel pump relay.
15. Screw in the spark plugs.
- Tightening torque - 15 - 22 Nm
16. Install the ignition coils.
17. Connect the ignition coil connector.