I have a '95 Pontiac Grand Prix V6 3100cc engine. I have a very loud knocking/ pinging noise which sounds like it coming from the intake manifold above the cylinder. I've replaced the intake mainfold, the exhaust manifold, and the engine with the same result same noise. I've also replaced the computer yet we still have the noise. Any ideas where I should look next?
Saturday, May 7th, 2011 AT 5:18 PM