Start by checking oil pressure with mechanical gauge.
On a cold engine you would want at least 40-60psi.
If OK, then change oil and run magnet through used oil looking for any metal particles.
If OK, then you could have a accessory drive problem, like a tensioner or pulley.
On cold engine, remove serpentine belt, start engine and run for 30 seconds, you will get alt. Light come on, but you are looking to see if knocking goes away.
If it does, then you have isolated problem to assy. Side.
If you still have the knock after above and there are no metal particles in oil, remove flexplate (flywheel) inspection plate and check that all bolts to flexplate are tight and none are missing.
Wednesday, December 16th, 2009 AT 9:26 AM