07 bluish smoke at startup - Ford Powerstroke Diesel Forum
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post #1 of 46 Old 04-05-2011, 10:25 PM Thread Starter
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07 bluish smoke at startup

Yesterday, I noticed whwn I first started my truck, a light haze of bluish tinted smoke came out. First thought was oh crap, something let go or is letting go. It just done it at startup. And cleared up after the truck warmed. I smelled the exhaust and didn't smell anything besides diesel. EOT is 188 and ECT is 190. The truck has 45000 miles. No change in performace at all.

Any thoughts?

BTW, am getting studs, gaskets, and coolant flush andelc switch done tommorrow.
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post #2 of 46 Old 04-05-2011, 10:27 PM
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I would pull the intake elbow off and make sure the EGR cooler hasn't leaked any. It sounds fine to me but you might as well check.
Mine smokes a lil still and I haven't had an EGR for 1.5yrs. lol

If you're getting all that work done tomorrow then it is unnecessary for you to go look if you're deleting the EGR. Are you deleting EGR or not?

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post #3 of 46 Old 04-06-2011, 02:43 AM Thread Starter
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yep, it's going bye bye. It is still operational right now. I am having it removed as well. I didn.t get any kind of sweet smell from the exhaust. I assume that would indicate a coolant leak.
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post #4 of 46 Old 04-06-2011, 06:09 AM
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Eh. Not necessarily.
Mine was gushing and didn't have any smell from the exhaust.

But it doesn't matter since you're deleting it

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post #5 of 46 Old 04-06-2011, 09:00 AM
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Check your FICM voltage.
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post #6 of 46 Old 04-06-2011, 03:32 PM Thread Starter
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What would that have to do with the smoke. And do you just check across the positive and negative lead.
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post #7 of 46 Old 04-06-2011, 04:50 PM
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When the FICM is going bad and everything is cold it (the FICM) doesn't have the voltage to fire the cold injectors properly. The blue smoke is unburned fuel. It goes away as things warm up and the injectors get easier to fire.

Take the little inspection plate off the FICM. If it is a 4 pin you take a multimeter set for Volts and one probe to the bottom pin closest to the fender and the other probe to the neg. battery terminal. Check while running and while cranking over. It should never drop below 46v and should stay around 48v.

If you have a 7 pin FICM check at the upper left pin.

Last edited by PGreenSVT; 04-06-2011 at 04:56 PM.
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post #8 of 46 Old 04-06-2011, 07:12 PM
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I have also read that oil from the CCV will cause smoke at startup too? Mine gives a puff of smoke also not sure of what color but only when it first fires up. I will have to check the FICM voltage to see if thats it.

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post #9 of 46 Old 04-06-2011, 07:52 PM Thread Starter
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Oh ok, if the ficm is shot would a factory replacement do fine or would it hurt to get the 58v upgrade. Would the 58v cause any problems with stock injectors.
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post #10 of 46 Old 04-06-2011, 07:53 PM
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No. It's fine.
You'd be crazy to spend money on a FICM without upgrading it.

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