Blue smoke on cold start - Ford Powerstroke Diesel Forum
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Old 11-21-2013, 06:27 AM
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Blue smoke on cold start

This morning it was about 38*F outside, waited for the WTS light to shut off and started it. It was quick as usual to turn over but when it did it let out a decent puff of blue smoke and had a small flow of smoke puff out of the pipe for a minute. I've read a few different things:
1. injector(s) going out
2. Glow plugs
3. Unburned fuel
I'm leaning towards unburned fuel because it'd not constant and last week when it was below 30*F I had the block heater plugged in and it was fine.
Another question, does anyone notice if you don't plug in your heater and it is cold outside and you just start driving without the engine warming up, either white, blue, or grey smoke will be billowing out of the pipe? I couldn't tell the color becuase it was dark and I only saw it from the headlights of the person behind me
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Old 11-21-2013, 08:06 PM
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I should also add that when it's cold, if I put some throttle to it, it'll seem like it's missing until I let off the throttle. Could it be just because it's cold? The other day it did it to me warm for the first time. It was completely warmed up since I had been driving for a bit. Also, again when cold, if I just press the throttle and let off immediately,(example: pulling away from my house onto the street) it will kind of lope for a second or two until it catches itself again. Any ideas?
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Old 11-21-2013, 10:19 PM
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dont start it right when the wts light goes out, its a dummy light.

wait atleast a minute before starting.

pull your icp and see if theirs oil coming through the sensor, if their is get a new one. this might be affecting your cold starts.
i had the same issue and replacing the icp fixed it.
how heavy of oil are you using, and how old is it? another thing to look at

and you shouldnt be getting a bunch of smoke out the tailpipe. should be running clean.
also do you start the truck in stock tune and drive it in stock tune until its up to operating temp?
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Old 11-22-2013, 12:04 AM
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How many miles on the truck.

White smoke but smells like fuel is oil burning. Replace external injector orings or possible internals of the injector are stuck or internal O-rings are bad.

White smoke that smells kinda sweet (maple syrup kinda) coolant burning
Probably injector cups or head gasket

White/blueish smoke too much fuel. Bad internal O-rings in the injectors. Or poppet getting stuck open dumping fuel all the time.





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Old 11-22-2013, 03:53 AM
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Quote:
Originally Posted by blue99stroker View Post
dont start it right when the wts light goes out, its a dummy light.

wait atleast a minute before starting.

pull your icp and see if theirs oil coming through the sensor, if their is get a new one. this might be affecting your cold starts.
i had the same issue and replacing the icp fixed it.
how heavy of oil are you using, and how old is it? another thing to look at

and you shouldnt be getting a bunch of smoke out the tailpipe. should be running clean.
also do you start the truck in stock tune and drive it in stock tune until its up to operating temp?
Yeah I got some oil in my ICP. I'll change that out here soon. 15W40, about 5,000 miles old and I start it in stock every time

And Corey, It's got about 131,000 and thanks for those tips
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