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compression check

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Old Oct 24, 2003 | 07:00 PM
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From: N Cal
Default compression check
Does anyone know the correct proceedure for performing a compression check (hot or cold engine)???
Thanks.
:cheers:
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Old Oct 24, 2003 | 07:03 PM
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Default Re: compression check (l2vette)
hook it up, set throttle to full open, cycle a few time till pressure does not increase.
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Old Oct 24, 2003 | 07:46 PM
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Default Re: compression check (Twin_Turbo)
also remove all the spark plugs before testing. this kills the drag from compression so the engine will spin faster with the starter and get a better reading on the gauge
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Old Oct 24, 2003 | 07:48 PM
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Default Re: compression check (Twin_Turbo)
and dis-able the ignition so you dont risk a fire with the wires hangin there. Un hook the hot wire to the dist or coil.
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Old Oct 24, 2003 | 11:22 PM
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Default Re: compression check (Twin_Turbo)
FUll Throtle while cranking engine???
hook it up, set throttle to full open, cycle a few time till pressure does not increase.
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Old Oct 25, 2003 | 12:36 AM
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Default Re: compression check (l2vette)
Yes, full throttle with the ignition disconnected. The throttle does not have to be WOT, but it does speed things up a bit.
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