FICM?orInjector,truck wont start

[white97]

i got a 2005 6.0, my truck started blowing blueish white smoke on start up for about a week, and it would idle really quiet and sluggish, until it would get warmed up and then run fine, so i checked the codes and got a PO263 Cylinder 1 contribution/balance fault, i need some help figuring out if this is an injector or FICM any insight would help thanks, truck dosnt start anymore

[Goose350]

Have you scaned for codes since the truck wont start? What are you using to scan with? Does the truck just turn over but never fires?

[m-chan68]

Is P0263 the only DTC?

[white97]

its the snap-on solstic or something like that, no i have checked after it wouldnt start

[white97]

i can get it running if i really try, but when it dose start it sounds like a gas engine and wont even move my truck

[m-chan68]

If it idles really quietly, it sounds to me like your EGR valve is stuck wide open. This WILL definitely cause a hard start issue like you describe. Combined with a non-contributing cylinder and you have a 6.0L that will barely start if at all. Are you sure you're not getting any other DTCs other than what you listed? Can you monitor live data? If so, look at EGR_VP, EGR_DESD, EGR duty cycle at key-on/engine-off and key-on/engine-running if you can manage to get it started.

[white97]

thanks ill give that a shot