ok im starting to get worryed now. i bought my 03coupe a few months ago and since i got it after i run the car pretty hard (4000 to 6000rpm) it makes a knocking sound and its allways done that but its starting to get louder. what could the problem be or is that what just what the car dose after it being run hard?

 

Welcome-California I assume?

 

lower octane fuel perhaps? mine knocked when i put 87 once. never doing that again

 

i wish i was in california but sadly im in new mexico




all i have every put it 91octane to chicken to put anything lower. would there be something wrong with the eginge?

 

knocking sound as in detonation?
or
knocking sound as in spun bearing?

 

it dosen't sound like its detonation. it knocks a about 2 to 4 times a second

 

idling, or under load?

 

just when it is idling it cant hear it when im driving

 

probably isnt octane then...is it only after driving hard, or is it all of the time

 

it only happens when i drive it over 4000rpm if i keep it under that it dosn't happen

 

If you can hear it while idling, use a hose or mechanics stethoscope to try and try to isolate where its coming from.

 

definitely sounds like your best plan of action, once you know where its coming from you can give us more info, or even expedite the process of getting it fixed.

 

seems like alot of 03 coupes are having issues today.

 

bump.

Curious.

 

Open the door and let it in.