GMC S15 Engine Compression

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To Do A Compression Test Does The Vehicle Need To Be...

1987 GMC S15

And Does The Accelerator Pedal Need To Be To The Floor When Cranking The Engine.

1 ANSWER

Asked by JimyJames

1986 GMC S15 No Compression In All Cylinders

1986 GMC S15

Nocompression In Any Cylinders After Changing Lifters And Intake Manifold Gasket Cant Find Any Leaks Did Run Before But Made Lots Of Noise...

1 ANSWER

Asked by sissypoo1

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Backfire Compression Coolant In Oil Hard to Start Idle High Idle Low Low Power Not Cranking Over Not Running Overheat Revs Up Runs Rough Sputter Stall While Driving Stall at Idle Vibration

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