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Registered
Join Date: Nov 2004
Posts: 576
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How to compression test again??
Can someone tell/remind me the important steps again on how to do a proper compression test, and on a cold engine??
damian |
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Home of the Whopper
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It is pretty simple. Search for "compression test" and all will be revealed.
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1968 912 coupe 1971 911E Targa rustbucket 1972 914 1.7 1987 924S |
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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most say to do it hot, trying to get the hose to screw in takes a lot of time.
here is how i do it. unplug CD unit remove all 6 plugs screw in adpater/hose into plug hole you can hold the throttle wide open or keep it closed, just be consistant. i did not see enough difference to say to do one way or the other. crank engine for 6 compression strokes. you will hear it. watch the gauge, make sure it gets a good pressure increase each stroke. it helps with making sure your hose is not leaking and for a good check along with final reading. i do 2 or 3 checks per, to make sure consistant readings for each cylinder. now, if you can help me with the leak down tester i bought from HF ![]()
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Registered
Join Date: Nov 2004
Posts: 576
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Thanks T77.......I wasnt ssure if we removed all plugs or just the one to be tested...couldnt remember....thks ....damian
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