Replacement Seats

From : azwiley1

Q: tim griffis via carkb.com wrote i have a 1999 dodge 4x4 360 with 133k miles it has alot of valve chatter .92 octane seems to help some anyone have any thoughts.....tim if 92 octane helps then its not valve chatter - thats pre-ignition. valve chatter sounds kind of like a sewing machine. its a pretty steady sound that varies directly with rpms. its caused by slack in the valve train. pre-ignition - knocking - may be present all the time but rarely is. it is worse under a load regardless of rpms. if its there all or most of the time check for a vacume leak - especially in the belly pan. -- ..bob 1997 hd fxdwg - turbocharged! 2001 dodge dakota qc 5.9/4x4/3.92 1966 mustang coupe - daily driver 1965 ffr cobra - finally on the road! .