light blue smoke
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New User
Joined: May 2007
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light blue smoke
my f250 smokes at idle and when going downhill no throttle. when i run a fuel additive it goes away. when i stop using the additive it starts smoking again. im hoping its injectors. any ideas and by the way its a 93 f250 7.3 banks turbo with 240,000 miles
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Thread Starter
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New User
Joined: May 2007
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the smoke starts right at start up goes away unless im going down hill with no throttle. when i use fuel additive power service brand i think. it quits smoking. after a cuople of tanks without additive it starts smoking again
Lead Driver
Joined: Dec 2002
Posts: 5,493
Likes: 16
From: Kuna ID
Does it instantly start smoking every time you have to sit at a traffic light or is it clear all the time other than downhill with no throttle? Smoking from a cold start is normal, the cylinder temp isn't quite high enough to completely burn everything yet. This can be exaggerated if the outside temp is cool as well.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
Well then don't stop using it ... 
Sorry, just had to!
Start cracking injector lines one at a time and letting it run for a couple minutes with the dead cylinder to see if you find one that clears up the smoke.
-Enjoy
fh : )_~
Sorry, just had to!
Start cracking injector lines one at a time and letting it run for a couple minutes with the dead cylinder to see if you find one that clears up the smoke.
-Enjoy
fh : )_~
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