2002 Chevy Cavalier rod knock

2002 CHEVROLET CAVALIER
140,000 MILES • 4 CYL • FWD • AUTOMATIC
Avatar
GREGO30
  • MEMBER
  • 1 POST
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
Advertisement
Avatar
BIGJIM79
  • MEMBER
  • 239 POSTS
does the car knock idling? If not, probably a spark knock.
Dec 14, 2009 at 2:27 AM
Avatar
MMPRINCE4000
  • ✓ASE Certified Mechanic
  • 8,548 POSTS
  • ASE Certified Mechanic
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
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.