Knocking Noise From Top End

mrnickleye · 06-21-2005, 06:20 AM

Is it a light tapping sound? = valve adjust......
Piston slapping the walls ???

Rod knocks, (bearings) sometimes can be made to sound up by lightly playing with the throttle. Barely increase and decrease the rpm a little bit, if it gives a rattle sound, it could be a rod bearing. Pull spark plug wires, one at a time, and ground them. If the sound stops on a certain cylinder, its that one bad.

06-21-2005, 06:20 AM	#2
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	Is it a light tapping sound? = valve adjust...... Piston slapping the walls ??? Rod knocks, (bearings) sometimes can be made to sound up by lightly playing with the throttle. Barely increase and decrease the rpm a little bit, if it gives a rattle sound, it could be a rod bearing. Pull spark plug wires, one at a time, and ground them. If the sound stops on a certain cylinder, its that one bad. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.