03 6.0l runs rough until it warms up

[kurtisp]

I have a 2003 F250 6.0 "shorty" SCSB and just recently after i changed the oil the next day the problems started(i dont know if this has anything to do with it) let it sit overnight, start it, and it runs really rough...spudering, no power at all(white/blueish smoke also)....once it gets to normal operation temp....its like nothing is wrong with it...runs fine....tested the ficm and its 48v off and running(guessing this is good)....no codes either....im stumped...been researching for weeks before i bring it to the stealership.....ICP?...HPOP??...to much oil??....

thanks for the help in advance

[da94broncodude]

power balance it and see what the injectors are doing

[novemberdelta]

weird..any codes? What do you use for oil? Did you switch oils? What are you using for filters?

[kurtisp]

Originally Posted by novemberdelta

weird..any codes? What do you use for oil? Did you switch oils? What are you using for filters?

rotella 15/40....and motorcraft filters....

been reading about addictives(REV-X...ect)...anyone think i should try this?

[kurtisp]

Originally Posted by da94broncodude

power balance it and see what the injectors are doing

im guessing this requires bringing it to the dealer?....i have an SCT extreme touch screen tuner with inovative tunes on it...doubt i can read injectors with that right?

[novemberdelta]

Couldn't hurt to try rev x. If you have an injector that's not working properly it might fix it. No problems at all after it's warmed up though? And have you tried changing the truck back to the stock program to see if it still does it?

[kurtisp]

Originally Posted by novemberdelta

Couldn't hurt to try rev x. If you have an injector that's not working properly it might fix it. No problems at all after it's warmed up though? And have you tried changing the truck back to the stock program to see if it still does it?

yep...tried the stock tune....i'll be trying additive and fuel filters next

[TMAG6.0]

Mine does this too but only for a few seconds while shes waking up. It has to be very cold 45F....or less, yes thats cold.

I would be interested to find out if it still does this after a few changes with the Rotella T-5. I run the 15/40 year round and she's always been grumpy on cold mornings.

Its only winter round here 2mo/year.

[kurtisp]

its just wierd to me that it started the day after i did my first oil change on the truck since i owned it....and im from south LA, dosnt get too cold..low 40s right now....but the issue start before the winter came....

[Firstdiesel6.0]

Have you pulled and cleaned the EGR valve? I have several different problems with mine but when mine was doing what yours way I came on here and several people recommended cleaning it. So I pulled it and that thing was filthy. Cleaned it up real good, popped it back in and she ran like a champ till other things started happening. But it solved the problem I had which sounded a lot like yours. Only did it while cold but once she got to normal temps you would never know. Couldn't hurt to try it, they need to be kept clean anyway unless you delet it all together.