2006 Ford 6.0 176,00 mi.
The following have been replaced in the last 50K mi. : Oil cooler, HP oil Pump, all injectors, HP fuel rail plugs, EGR W/Bypass.
Grey smoke and rough idle.
Heavy black smoke on acceleration, with no apparent power loss.
Knocks under heavy load.
1 gallon approx. more oil than max. (I did not do the oil change!)

Anyone?

 

first question. did you drain the extra gallon out? 1 quart over isnt very good, much less 1 gallon!!

 

yes. No change.

 

did the same guys that overfilled your truck by 1 gallon install the oil cooler, HPOP, injectors, and all that?



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please say they didnt!

 

NO!

 

i was going to say theres your problem

i hope someone else jumps in here that knows a thing or 2 more than i do.. been chasing my tail for 3 months now on yet another problem with my 2003 6.0..

 

My mechanic can changed the Oil Cooler out in 1.5 hrs. He is top notch. He worked for Ford Fleet on nothing but the 6.0, but he is unavailable at present. :-(

 

wish you the best of luck figuring out the problem man!