In case of 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˚C.
Remove the resonator.
Remove the ignition coil connectors (A) and ignition coils (B).
Using a special 16 mm wrench, remove 6 spark plugs.
Check compression in each cylinder.
Install the compression tester in the spark plug hole.
Open throttle fully.
- With wide open throttle, start the engine.
Before starting the compression test, make sure the battery is fully charged to ensure 250 rpm.
Repeat procedures 1 to 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, it is necessary to pour a small amount of engine oil through the spark plug hole into the cylinder, repeat procedures 1 to 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 does not sit properly.
It could also be a damaged cylinder head gasket.
Return the spark plugs.
Install ignition coils and coil connector.
Install the resonator.