Pick your brain on a cold start..

[ford_cummins83]

I have an 03 6.0, just replaced icp, and hpop due to a no start.. Now it hates cold starts, it fires up, and then starts missing, and has no throttle, sounding like its running on 5 cylinders, ill stick it in drive an it dies, but after warming up it gets better, and I get my throttle back, and once it hits normal temp it runs like a champ.. Just had the ficm rebuild and it's sitting at 48 an I show no codes, I'm thinking injectors sticking but would like your ideas on this before I throw new sticks in it..

[PowerstrokeDriver2]

What oil are you running? How cold are these starts?

[twoicebergs]

What he said, but I live where it is really cold, and mine doesn't miss at all. So, what's your problem? Your HPOP was just replaced; it could have contaminated your oil enough to damaged your injectors! I know you didn't want to hear that, but it is possible and likely, based on your problem description. Rather than jumping in and replacing them right away, do a few simple tests to rule out the other possibilities like fuel filters/water, leaking o-rings, and do a contribution/balance test. It could even all be in your head(s). If you have high miles on the old girl, then maybe you want to just get to the injectors, but be ready for something else if that didn't cure the problem.

[PSDMikeB]

Can't tell from your mods if you have an EGR or not. Could be a stuck open EGR valve or sticky VGT vanes.

MikeB

[sinner6.0L]

It's most likely injectors

[JER-1]

I'd put some valoline blue 5-40 full sythentic diesel oil in it and a couple of jars of rev x. Before I'd spend a bunch of money on anything else ,since you say after it's warm runs fine. Maybe drop 2 or 3 cans of seafoam in the diesel fuel tank and change the oil and fuel filters and work from there,do all that for less than a 1 new injector. What I;d do first just me.
JER-1

[ford_cummins83]

The truck is stock, I did an oil cooler and egr delete when I did the hpop, this morning it was 47*.. I just did a full service on it, motorcraft filters and 15w40

[kaya@bernhausen]

Originally Posted by sinner6.0L

It's most likely injectors

i agree with this

[ford_cummins83]

Thanks guys, I got a set in the mail, if they would ever get here... I just wanted someone else's opinion for a little security I since it wasn't giving me any codes and my scanner doesn't do graphs and by the time I have someone check it it's already warm and running great..