Compression tests

Tiny
LKSTENGER
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  • CHEVROLET CAMARO
Im doing a compression test on a 1987 iroc z-28. What should the P.S.I. Be a on a compression test of one of the cylinders on this engine be.
Sunday, March 21st, 2010 AT 2:56 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Anywhere from 125-150p.S.I. Would be good. They all should be within 20% of each other though. To do this correctly, disconnect the coil wire and open the carb up all the way. If you have one that is low then put oil in the cylinderand test it to see if it coms up.
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Tuesday, March 23rd, 2010 AT 6:51 PM

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