Black smoke
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Tuned
Joined: Aug 2005
Posts: 305
Likes: 1
Black smoke
So my 6.0 throws a small amount of black smoke when I slightly step on the gas. It will only do so for a second or two. From What I have read so far, black smoke out the exhaust seems to be normal when stomping on the pedal or for modded engines.
Is this normal for my situation where I am only slightly accelerating?
Is this normal for my situation where I am only slightly accelerating?
Post Fiend
Joined: Oct 2002
Posts: 11,314
Likes: 4
Smoke means unburnt fuel...
i.e. unbalanced amount of fuel and air...
either
it is being fed too much fuel for the air going in or
if the fuel is right, it is starving for air...
or something is broke
did u say what mods etc..?
i.e. unbalanced amount of fuel and air...
either
it is being fed too much fuel for the air going in or
if the fuel is right, it is starving for air...
or something is broke
did u say what mods etc..?
Senior User
Joined: Jan 2005
Posts: 373
Likes: 2
From: Alberta, Canada
All my diesels have done that. The truck over fuels slightly on acceleration and does not have enough air right then and puffs a little black POOF, but once the truck is able to match the fuel to air mi
usually within 5-10 seconds) it stops puffing.
I say normal if its just a small puff.
usually within 5-10 seconds) it stops puffing.I say normal if its just a small puff.
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Tuned
Joined: Aug 2005
Posts: 305
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I have not had it reflashed. As a matter of fact, I'm not even sure what that means. Is that like a computer update from Ford or are you speaking of computer tweaking such as an SCT or bullydog?
I did take out the egr valve this weekend and it was pretty dirty. I did some reading and found that carb cleaner works best. It took the crud right off. I bought the new o-ring/gasket kit from ford but managed to re-use the existing parts.
I did take out the egr valve this weekend and it was pretty dirty. I did some reading and found that carb cleaner works best. It took the crud right off. I bought the new o-ring/gasket kit from ford but managed to re-use the existing parts.
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Senior User
Joined: Jan 2009
Posts: 449
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From: Central Florida
Couple weeks ago I had the egr valve replaced, had the pcm, ficm, and tcm reflashed to the latest and it smokes on acceleration now. I get more smoke on start up and more smoke when I hit the throttle. Seems to run fine when the air catches up - BUT - it did NOT do this before the flashes and the new egr valve. I also took it to a dealer after the initial work because of the smoke, one that did not do the initial work, and they gave it a clean bill of health after diagnosis and drive testing. Any advice??
I have read on here that some people have noticed that the 6.0's have been a little smokier with the new flash - but that is not a scientific conclusion.
I have read on here that some people have noticed that the 6.0's have been a little smokier with the new flash - but that is not a scientific conclusion.
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