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Old 09-24-2010, 04:11 PM   #1 (permalink)
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Default how to performe a compression test

ok so im trying to do a compression test on my 93 3000gt vr4 i have 167,000 miles on it. I have never performed a compression test before i have tried searching in the forum but i cant get the right information.Can somebody tell my how this has to be done i need to know if its normal for the compression test to be giving my 75 psi and is the car suppose to be warm or how does it work please help
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Old 09-24-2010, 04:50 PM   #2 (permalink)
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Default Re: how to performe a compression test

Here you go man... Checking Engine Cylinder Compression on a 3000GT (6G72)


Last edited by J. Fast; 09-24-2010 at 05:07 PM.
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Old 09-24-2010, 04:57 PM   #3 (permalink)
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thanks bro i appreciate the help
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Old 09-24-2010, 05:13 PM   #4 (permalink)
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Default Re: how to performe a compression test

Sounds like things aren't so good if your compression is 75 . All the best, man!

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Old 09-25-2010, 11:13 AM   #5 (permalink)
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Default Re: how to performe a compression test

that compression was done while car was cold i don't know if it will give me more compression if car is hot i need help and how hot does it need to be
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Old 09-25-2010, 12:51 PM   #6 (permalink)
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Default Re: how to performe a compression test

Wait for the T-stat to crack open... You should still be in the 100's when it's cold though.

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Old 09-25-2010, 10:22 PM   #7 (permalink)
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Default Re: how to performe a compression test

this was handy since im doing this tomorrow.
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Old 09-25-2010, 11:32 PM   #8 (permalink)
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Default Re: how to performe a compression test

your compression should never be 75psi even on a cold engine. Something is wrong.
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