If there is a loss of power, increased fuel consumption or increased oil consumption, it is necessary to check the compression in the engine cylinders
Warm up the engine to normal operating temperature of 80 - 95˚С.
Remove the resonator.
Remove the ignition coil (A) and ignition coil (B) connectors.
Using a special 16 mm key remove 6 spark plugs.
Check the compression in each cylinder.
Install the compression gauge in the spark plug hole.
Open the throttle valve fully.
- With the throttle valve fully open, start the engine.
Before starting the compression test, make sure that the battery is fully charged to provide 250 rpm.
Repeat procedures 1 through 3 for each cylinder.
Compression testing should be done in as little time as possible.
Standard compression value: 1176.79 kPa.
Minimum allowable value: 1029.69 kPa.
The difference between the compression of each of the cylinders: no more than 98.07 kPa.
If there is insufficient pressure in any of the cylinders, pour a small amount of engine oil through the spark plug hole into the cylinder, repeat procedures 1 through 3 and measure the pressure again.
If the pressure has increased, the piston rings or cylinder are damaged.
- If the compression pressure has not changed, then the valve seats are probably damaged, or the valve is not seated properly.
Also a possible cause may be damage to the cylinder head gasket.
Tighten the spark plugs.
Install the ignition coils and coil connector.
Install the resonator.