Hey all so this trucks been a real head scratcher it first was throwing a misfire in cylinder 5 and a rough cold start idle code. I've replaced plugs,wires,injectors,manifold gaskets, high pressure fuel lines and have pressure tested cylinder 5 with 150lbs holding solid which resolved the rough cold idle start but still showing the misfire in cylinder 5. Kind of at a loss and looking for insight

 

SAME EXACT PROBLEM .. mine is a 2018 , replaced everything you stated as well , did you ever get it fixed ?????

 

yup I did my friend unfortunately it was cam and lifters cylinder 7 wasn't closing all the way (afm shutdown) causing cylinder 5s lifter to collapse meanwhile cylinder 7s lifter scratched the **** out of the cam

 

Honestly that’s fine ! My engine is down to the bare block rn , I already have a stage 2 BTR cam with DOD delete , this gives me hope !! My truck has been broke for 2-3 weeks , and dealer won’t work on it because it has a Cold air intake and voided warranty .. bs