If it's a knock, it's most likely rod or main bearings. Does the car have good oil pressure? Also, wrist pins can make a noise that sounds like a knock. To check it, you will need to plastigauge the rod and main bearings. To check the wrist pins, you will need to remove the pistons.
Let me know what you decide.
Thursday, October 16th, 2008 AT 10:52 AM