Starting to get concerned....

[Hollingerpitch]

Hey guys, any imput would be appreciated

I have an 04 f350
My truck in recent months has had trouble at start up, little rough running but once idle is achieved purrs like a kitten. I've started to notice that rough start is getting worse... And is shuddering when engine is relatively cold, low power cold. I was running mobile 1 0w40 until this weekend when I changed to 15w40 because spring is here, the symptoms are significant worse now...

Other notes, lose about a gallon of coolant every 2 months
No smoke except on start, white
No codes
Egr delete is installed
No tuner

Any help would be awesome

[Hollingerpitch]

Little bit more info,
Beginning to think it might be an injector or fuel pressure issue,
Seems to start better if I cycle the key a couple times before I start
And the change in oil viscosity would only affect fuel injector performance.. I think
Another note is that I live in Canada so it is still freezing at night

[85burban]

do you have a way to see your ficm voltage?
does it run good once warmed up?

[Hollingerpitch]

Yes I have 45 volts at ficm
And it runs perfect when warm

[ZMANN]

Search stiction

and cycling the key does 2 things runs the glow plugs again and depending on the Flash you have may heat the injector spool valve

but a gallon of MIA coolant is a huge issue

[Hollingerpitch]

I looked up stiction last night and has many similar symptoms I am having. I went to Langley and picked up some rev x product, will run it soon and see what happens

[ZMANN]

I think you will Be happy

and I would have suggested it however the coolant loss won't be fixed and is likely a blown head gasket

[Hollingerpitch]

Yeah I am suspecting a head gasket as well but I have just been so busy I haven't had a chance to start it, maybe June ill start a head build, and throw some studs in, thanks for the help

[85burban]

45 is bare minimum! Should be around 48. I would bet that is your problem, not injectors!

[kaya@bernhausen]

Originally Posted by Hollingerpitch

I looked up stiction last night and has many similar symptoms I am having. I went to Langley and picked up some rev x product, will run it soon and see what happens

did you by chance stop by bernhausen?

Originally Posted by 85burban

45 is bare minimum! Should be around 48. I would bet that is your problem, not injectors!

TBH, i don't think 45v is going to cause a rough running condition. it'll definitely get worse, and could cause damage to the injectors, or maybe already has, but i've seen ficm's drop much below 45 and not make any difference from a drivability standpoint. from what i've seen, it needs to drop below at least 35 before the driver will notice. and a lot of times, what they'll notice is blue or white smoke and that's all