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05 6.0 Running Rough/Blue Smoke

3K views 5 replies 3 participants last post by  TmoGTO 
#1 ·
Hey everyone, first of all I'm new to diesels and powerstrokes so bare with me.

I just recently purchased an 05 F350 and upon startup the vehicle starts and runs with no problems at idle until I start moving. After the truck shifts into second it seems to start hesitating and running rough and i notice a bluish tint smoke come out of the tailpipe. The truck will run rough and smoke a bit until it reaches operating temperature then the problem completely disappears. It only happens on cold starts and until I reach operating temperature. Anyone have any ideas on what to start looking at so i can resolve this issue?The truck is completely stock with no mods. Any help is appreciated

Thanks,
Tom
 
#2 ·
Injector o rings
 
#4 ·
also possible, throw some fuel treatment in the tank when you fill it up
 
#6 ·
Went ahead and bought some Motorcraft Cetane Booster and so far the truck has been pretty responsive to it and have not really had much of an issue. Im going to try an oil change to a full synthetic 5w-30 and rev- x and see if that helps at all as well.
 
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