2002 Chevy Cavalier rod knock

2002 CHEVROLET CAVALIER
140,000 MILES • 4 CYL • FWD • AUTOMATIC
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GREGO30
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My car idles and runs good .But At 3-4k rpm's it seams to sound like I could have a rod knock .If it is a rod knock .Will it still pass smog?And would the check engine light come on?And also what kind of test can i do to determine if my car does have a rod knock?THANKS.
Dec 10, 2009 at 3:21 PM
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BIGJIM79
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does the car knock idling? If not, probably a spark knock.
Dec 14, 2009 at 2:27 AM
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MMPRINCE4000
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I would also drain oil and then run a magnet through the used oil looking for any metal particles.

But as Jim mentioned, a rod would make noise all the time, getting worse as rpm increases.
Dec 14, 2009 at 8:25 AM
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