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Home >> Jeep >> 1991 >> Comanche Eliminator, RWD, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Specifications >> Mechanical Checks >> Engine Compression >> Notes

Engine Compression: Notes

Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed (on dual plugs, remove exhaust side only) and throttle wide open.

NOTE: Compression pressure and cylinder pressure variation for 2.5L and 4.0L engines are not available from manufacturer.
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