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Should i be worried about these compression results

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bob123131

15+ Year Contributor
457
1
Dec 20, 2004
winona, Minnesota
I did a real quick compresion test and got 154, 150, 130, 148. Should i be really worried about that 130 i dont really have the time or money to tear it down now. Is it robbing me of power?
 
I did a real quick compresion test and got 154, 150, 130, 148. Should i be really worried about that 130 i dont really have the time or money to tear it down now. Is it robbing me of power?

Take this with a grain of salt becuase i'm going on what I've read not experience but, it's not so much the number to worry about but the diference between them. That's a pretty big drop on your #3
and is more than likely not a good sign.
 
yea i know, that was my dry test, i was going to do a wet but i figured no matter what it is i cant fix it now anyway. Just wondering if their are any serious dangers to keep driving etc. Also if their is a point to continue modding my car with bolt ons before i get that fixed.
 
2nd LordZed. It really is the difference between them that is the worry. Let me ask you this. Does you car idle roughly? Does it tremble? If so, it is most likely because of cylinder 3. As far as overall low compression and robbing you of power, I'd say the 150 range is low and you are probably loosing some power (along with some oil :) ) but no big deal. I think you should just baby your engine in the mean time and save up for a new one (or a rebuild).
 
the ok should be about 164 psi and you should have 14psi differ
 
Your results aren't really bad yet. Just check it once in awhile to make sure it doesn't get much worse. Right now your engine isn't running optimally but you can certainly run it like that for a long time. However, if you put off a rebuild for too long, it might be more expensive down the road if stuff breaks. Post back your results once you've done the wet test.
 
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