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Home >> Porsche >> 1981 >> 924 Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Tune-Up - 4 CYL >> Compression Pressure >> Notes

Compression Pressure: Notes

Check compression with engine at normal operating temperature, fully open throttle, all spark plugs removed and at normal cranking speed. Crank engine at least 12 "puffs" per cylinder.