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zero compression

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Old 03-20-2017, 12:39 PM   #1
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Default zero compression

hello all, I have a 02 s2000 and recently noticed it sounded a bit off, I took the car in to have a compression test done to find out that cylinder 4 has zero. I was told that my best bet would be to try and find a new motor rather than rebuild it due to cost being roughly the same for both and for the fact that because it hasn't been torn down yet we're uncertain of the reason behind the lack of compression (hole in cylinder/piston). just wanted to get your guys input on this matter as I look to source a new to me motor and tranny combo. thank you.
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Old 03-20-2017, 04:15 PM   #2
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Default Re: zero compression

Probably a broken or bent valve?
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Old 03-20-2017, 08:39 PM   #3
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Default Re: zero compression

Scope the cylinder... maybe you can see if the problem is valve related or piston related.
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Old 03-25-2017, 12:56 PM   #4
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Default Re: zero compression

both great suggestions. ill try them out and see what I find
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Old 03-25-2017, 01:04 PM   #5
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Default Re: zero compression

A rebuild is always better than gambling on a used motor.

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Old 03-26-2017, 01:47 PM   #6
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Default Re: zero compression

how much does a standard rebuild cost usually?
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Old 03-26-2017, 05:28 PM   #7
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Default Re: zero compression

It'll depend on how much you can do yourself, how much a machine shop will have to do and what all is needed. First things first, diagnose the engine and find out why you have zero compression in the one cylinder.
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