A friend of mine has a 6.7 dpf deleted H and S tuned 2011. He usually runs it on the top setting most of the time. He also does not tow. 6000 miles later the engine has a tapping noise (sounds like a valve tap) I talked to some other mechanics and they had several trucks smash the brass bushing in the connecting rod. Usually one is really bad but all the rest are loose as well. They blamed it on the H and S for have too much timing or fuel injection before the piston is still going up.
Anybody on here have this problem or know what is happening???
any help would be greatly appreciated
Anybody on here have this problem or know what is happening???
any help would be greatly appreciated