1995 Chevrolet Cavalier Repair Question
Asked on May 9, 2011
Knock
The other day someone got my throttle stuck on my 95 cavalier.it was overrevved for about five minutes until they got it back and i got it unstuck.now there is a knock in the motor.it sounds as if it is coming from the top in the head.i popped the valve cover off andd the rocker arms are looking like they r ok when i ran it.any ideas
Asked by jpeaceAnswer
Replied on May 9, 2011
Does it knock at idle or do you have to rev it to get it to knock?
Replied on May 9, 2011
Try this let it idle and start by pulling one wire off see if the knock gets lower or goes away.Then put the wire back on and move to the next until you have done all four wire's.If the noise gets a lot lower or goes away you know it's in the lower end not the top end.
Replied on May 9, 2011
yeah it went away when i pulled the fourth plug
Replied on May 10, 2011
Sounds like you have a knock in the lower end most likely a spun rod bearing.
Replied on May 10, 2011
could it be a valve that came unseated and slamming
Replied on May 10, 2011
If it were a valve slamming wouldn't it still slam with the spark plug wire unhooked and the cylinder not firing?The piston is still going up and down and the valve would still be opening and closing.
Replied on May 10, 2011
Your welcome that's what were here for.