isx black smoke, fuel knock, engine year 2009 running rough

[Rawze]

(09-18-2019 )woodwoody1 Wrote:  cylinder cutout ok
suction side ok
egr ok
all filters good intake and exhaust
mech 3 of them say if timing was off it would show a code
anybody thinking cracked head?

sounds like you need a trip to mr. hags then.

BTW: I have seen plenty of engine with bad injection timing throw no codes whatsoever. Not saying it is your issue, but it is one of many possibilities.