| So I got the car running but still only for seconds at a time and the motor makes a big knocking noise and won't rev over 2k rpm. I have oil in the car and like I said the oil pressure gauge in the car reads good pressure. I have a harbor freight compression tester so it sounds like air leaks out of the fitting for the tester so I had someone crank the car while I help the tester. I followed a thread I found on this site on how to do a compression test ( unplugged fuel pump and cas and wide open throttle) here are the results ( since it doesn't hold pressure the reading are as close as possible to eat I saw) 1: 150-160psi
2: 150-160psi
3: 150-160psi
4: 70-90 psi
5: 150-160psi
6: 80-90 psi I am going by this cylinder identification: Back
5 6
3 4
1 2
Front So now wit the knocking noise plus these 2 bad cylinder readings wat should be my next step? How can I tell If I damaged anything internally because it was knocking? This sucks and I'm pissed
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