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Miss fire issues...

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Old May 13, 2014
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Miss fire issues...

My CEL is on. It is a 2002 civic ex automatic. According to the computer cylinders 3 and 4 are misfiring. I replaced the spark plugs but that did not help. I sounds AWFUL when it idles at stop lights. I think it maybe be time to do the head (again) at 262,000 but my friend says that not it. What else could it be?

Last edited by kdliberty; May 13, 2014 at 01:07 PM. Reason: forgot to put year/model
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Old May 13, 2014
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Re: Miss fire issues...

Figure out why it's misfiring.

Compression test.
Valve adjustment?
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