droppedchev

iTrader: (5)

i did a 6.0 swap with a 228r cam and i still keep getting a missfire i checked the injectos and the coils plugs wires everything dont know what else to do will a bad cat do this or is it the tune that is doing it if anyone can pitch in and help

droppedchev

iTrader: (5)

i did a 6.0 swap with a 228r cam and i still keep getting a missfire i checked the injectos and the coils plugs wires everything dont know what else to do will a bad cat do this or is it the tune that is doing it if anyone can pitch in and help

budhayes3

iTrader: (19)

Do you have an actual misfire or just a misfire code? If it's just the code, it may be a result of the aftermarket cam and just might need to be tuned out. If it's an actual misfire, start with the basics, fuel, spark, and compression.

BlackGMC

iTrader: (31)

What springs did you add? Due to the aggressiveness of that cam lobe more than likely it is the valves slamming shut. I had a similar problem when i did my first cam swap, i ended up just zeroing out the misfires table..

droppedchev

iTrader: (5)

well i think i found my problem i had the truck running and i was listing to the coils and one of them missed a spark so it was arcing out so i swapped it will another coil pack and it hasnt miss fire once will we see how is on cold start