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Testers
The page shows you which socket of the cable (Measurement Module) (3) is to be used with a capital A, B or C.
Crank the engine using the starter motor until the pressure reading stops rising.
Check the compression of both cylinders.
- standard value: 11-12 bar;
- minimum value: 10 bar;
- Maximum allowed difference between cylinders: 2 bar.
Excessively high compression readings indicate the following:
- deposits in the combustion chamber.
Low compression readings indicate:
- gas leakage between head and cylinder;
- worn valve seats;
- bent valve stems;
- incorrect valve clearances;
- worn cylinders or piston rings.
Refit the outer structures.
Refit the spark plugs and position the coil-spark plug cables in their seats.
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