Thick Blue Grey Smoke

[toddy]

Ive noticed a very thick blue gray smoke coming from my truck since I had the fuel leak fixed. It used to be black but now its a really thick blueish gray that just hangs in the air for a while. What causes this?

[thelittle289]

i had the same problem, #5 cylinder was srached and i guess it was burning some oil only had 200psi and contibution test said #5 low.

[mario a diangelo]

also dosn't water / coolant burn blueish in the fuel system?
Our 6.0 at work has done that forever blueish smoke until the thing is warmed up

[toddy]

Its doing it at Temp.

[mario a diangelo]

oooooo not good

[toddy]

The first time I ever noticed it was when I had a used muffler put on my truck. Then it went away and now its resurfaced. But Im not driving as much as I was (90 mile in the last week versus 350 before hand) So I wonder if its soot that collects in the muffler. The blue grey smoke eventually goes away but only if I stay on it a couple times.

[thelittle289]

I think if its coolant it will smell sweet.

[forddieseldoctor]

Originally Posted by mario a diangelo

also dosn't water / coolant burn blueish in the fuel system?
Our 6.0 at work has done that forever blueish smoke until the thing is warmed up

coolant is usually white when it burns. think about steam.