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Home >> Honda >> 1981 >> Prelude Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Tune-Up >> Tune-Up - 4 CYL >> Compression Pressure >> Notes
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Compression Pressure: Notes

Check compression with engine at normal operating temperature, air cleaner and spark plugs removed, throttle and choke valve wide open and engine at normal cranking speed (300 RPM). Crank engine at least 6 "puffs" per cylinder to determine engine compression.