Blue Smoke..... - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 11-01-2007, 07:04 PM Thread Starter
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Blue Smoke.....

My truck smokes blue.... like if its sitting there in nutral, and i hit the pedal and the rpms go passed 2300 or so, a decent amount of blue smoke comes out of my stacks... when i start it up in the morning, alot of white smoke comes out then it turns into blue smoke.... but when i am driving down the road nothing comes out... if you look at the inside of the stacks, they look like i painted them with a semi gloss metalic black paint. touch the inside of the stack, you wont get alot of soot on your fingers, but you will get them a little wet...any ideas on how i can fix this problem.. thanks for help..
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post #2 of 4 Old 11-01-2007, 07:08 PM
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This is from dieselmans site Blue or blue/white smoke:
Caused by insufficient fuel or oil consumption. Normal when engine is cold or idling for extended periods.
Excessive smoke could be caused by air in the fuel, contaminated fuel, loose or plugged injectors, worn or leaking injector o-rings, thermostat stuck open, oil consumption, or plugged crankcase depression regulator valve. Also PCM inputs such as MAP or ICP sensors.

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post #3 of 4 Old 11-06-2007, 09:24 AM
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Make her a compression test, It could be rings...

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post #4 of 4 Old 11-26-2007, 12:57 PM
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I'm having the same problem, and I've been trying to figure out what it is. On my truck, it belches blueish/grayish smoke at around 2300 RPMs (depending on temperature) in neutral, 1st and 2nd gear. 3rd - 5th it doesn't do it. If my temperature gauge goes to around the "A" in normal (that's where my temp runs for some reason), the problem goes away.

I have noticed loose exhaust bolts at the driver's side manifold collector, and upon tightening them, the problem either went away, or decreased dramatically.

The truck is also can't even move out of it's own way until the temp reaches the "O" in normal. Can somebody please explain why the truck does this? It's about to drive me

I'm guessing there is a fuel deliver problem during these conditions, but I don't know what to do. Not getting any codes.
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