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Old 04-02-2013, 12:31 PM   #1
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Did a compression test. What kinda numbers should I have

Hi all,

I just did a compression test on my car because I has been running rough and I know the SPI likes to drop valve seats. I was just wondering what kinda numbers that I should be looking for. Here are my results

1 178
2 178
3 175
4 174

Do these numbers look good? It has 124k miles on it.


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Old 04-02-2013, 12:57 PM   #2
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Those are good numbers.
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Old 04-02-2013, 02:12 PM   #3
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Seems healthy to me. The numbers themselves are fine and they're consistent across all 4 cylinders. At that mileage though, I'd get the cylinder head replaced ASAP if you plan to keep the car. I think most people on here who've dropped a valve seat had it happen around 120-150K miles.
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Old 04-02-2013, 06:27 PM   #4
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I wish I could replace the head, but I was quoted between $600 to $1000. I'm but a poor college student so getting it replaced is out of the question. I believe my O2 sensors need to be replaced at my spark plugs were almost white when I was looking at them today and my CEL is on telling me the same thing. Fingers crossed its all it is.
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Old 04-10-2013, 08:13 AM   #5
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Just bought one with 79k miles that dropped, it can happen at any milage.
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