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compression testing without uim?

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Old 06-09-07, 05:04 PM
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compression testing without uim?

Is it possible to compression test engine while the uim is disconnected?
Old 06-09-07, 05:15 PM
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Yes
Old 06-12-07, 01:03 AM
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one question,
does oil affect compression testing?
if so, does having the metal rod from the metering oil pump disconnected from the throttle body affect compression?
Old 06-12-07, 01:07 AM
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Yes and it will kill your engine after not too long.
Old 06-12-07, 07:41 AM
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Originally Posted by TehMonkay
Yes and it will kill your engine after not too long.
I will have to say, I ran mine with that bar disconnected *first rotary, didn't know wtf that bar was for, and when I bought it, it was just dangling there....*and I ran it like that for months, and amazingly, the car is still running :O
Old 06-12-07, 08:32 AM
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Without some oil on the seals compression falls off dramatically.
Also compression varies a lot with cranking speed.

If you're not sure if the MOP is working then premix some TC3 or MMO with the gas.
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