To do a compression test does the vehicle need to be at operating tempature

1987 GMC S15
220,000 MILES
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JIMYJAMES
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  • 1 POST
and does the accelerator pedal need to be to the floor when cranking the engine.
Sep 17, 2012 at 5:42 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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