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Join Date: Apr 2000
Location: Garden City, MI, Wayne
Re: What does a rod knock sound like?
Find out what cylinder is making the noise. If it is a rod knock, the sound should go away if you pull the spark plug to that cylinder. If not, then it's likely a lifter/cam problem.
If you believe that it's a cam/lifter problem you can find it easily by running the engine with no valve cover and pressing down on the pushrod side of each rocker arm. You'll feel the difference when you come to one that is loose.
An exhaust leak will tend to be a ticking sound. Look for black residue where it is leaking.
The other possibilities are wrist pin, and piston slap.
Last edited by Unclepennybags; Mar 30th, 05 at 8:18 AM.
Reason: additional trouble shooting info