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-   4.0L OHV & SOHC V6 Tech (https://www.ranger-forums.com/4-0l-ohv-sohc-v6-tech-33/)
-   -   compresion test #'s (https://www.ranger-forums.com/4-0l-ohv-sohc-v6-tech-33/compresion-test-s-80610/)

swickwake Feb 21, 2009 10:48 PM

compresion test #'s
 
96 4.0 ohv motor

these compression #'s (in psi) tests were taken today. these #'s are from the dry test going cylinders one through six 190, 180, 175, 180, 190, and 180. these are from the oil shot test going cyliners one through six 195, 185, 180, 185, 185, and 190.

the engine was at WOT, all plugs removed, and a tea spoon shot of oil was injected in to each cylinderafter the first round. one other thing this motor was not at operation temp this is due to the fact that the motor is sitting on a pallet.

what are your thoughts on these numbers? what should this motor be pushing in psi? is this motor in fairly good condition?

thank you

NicksterSVT Feb 21, 2009 11:09 PM

sounds good to me... you have one cylinder that is a little bit lower than the others, but not enough to worry about.

big-blue-oval Feb 22, 2009 12:07 AM

as long as they're all within a 10% range, it's considered acceptable.

Alex98 Feb 22, 2009 12:54 PM

yea those numbers are fine mine were like that pretty much

swickwake Feb 22, 2009 11:46 PM

cool thanks for the help


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