LB7: Grey/blueish smoke while cruising

KEVINL

Well-known member
Jul 4, 2008
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48
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Phoenix, AZ
My trucks has started smoking grey/blueish while cruising and under light acceleration. It does not smoke at idle oil looks good any ideas?

Injectors?
 
Last edited:

KEVINL

Well-known member
Jul 4, 2008
1,431
43
48
42
Phoenix, AZ
No, When I start it there is a puff of black smoke


idle is clear


It is when I am lightly on the throttle or cruising is when it smokes grey/blueish it turns black with slightly more throttle
 

SteveFord

What's Next?
May 8, 2008
1,317
0
36
Iowa
You can check the balancing rates and see where they are at to start with. No ther fuel codes? When I had my 02 when the injectors went bad a week before hand I kept getting a low rail code whenever I got after it and they started getting loud. It smoked like your describing but I had fuel in my oil.