below 2000 revs sound fine but over it knocks very loud
Aug 10, 2008 at 6:43 AM
Advertisement
MERLIN2021
✓ASE Certified Mechanic
17,250 POSTS
Usually engine knocking is a sign of a bad piston wrist pin, or crank journal and bearing inserts. Either way the motor needs to be torn down for inspection.
Aug 10, 2008 at 8:33 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.