But you'd prefer a balance across all the cylinders. If all were 180 and one was 150 you'd want to get that taken care of.
The book will have the accurate limits and variation limits
Quote:
Originally posted by grandprix38: I ran my 97 grand prix w/3800 series 2 engine for 5 - 10 min to get it to operating temperture, Did compression test 3x on each cylinder and here are the results #1: 155 -150 - 150psi #2: 150 - 150 - 150psi #3: 80 - 80 - 80psi (sh@t-f%ck) #4: 160 - 160 - 160psi #5: 170 - 170 - 170psi #6: 180 - 175 - 175psi If the compression on # 3 is that low and it was due to a ring, wouldn't there be blue smoke, cause I don't see any.
So what about these readings, hope and pray it is just the valves, the car did overheat and shut down on the freeway and been down for a few months now, are the rest of the readings other then #3 ok, or probobly something to do with valves also. And I would have to remove head anyway to fix wouldn't I?
_________________________
Thanks for editing my sig Blackarrow98gp great Job! Now to get this babe back together!