ficm location

[kfranklin34]

white and gray smoke at idle and then turns black when accelarate and missfires

[dhanna6powerstroke]

Originally Posted by kfranklin34

white and gray smoke at idle and then turns black when accelarate and missfires

To answer your question, the FICM is located on the drivers side valve cover but I don't think this is your problem. Sounds like a possible EGR valve that is dirty causing it. When driving and you get the engine under a load does it puff black smoke and feel like it is surging?

[kfranklin34]

no we have alredy put the egr delete kit on it and when it idle it will miss for a couple fo seconts and then it will run good for a couple of seconts and wen it starts missing the smoke turns black

[dhanna6powerstroke]

Originally Posted by kfranklin34

no we have alredy put the egr delete kit on it and when it idle it will miss for a couple fo seconts and then it will run good for a couple of seconts and wen it starts missing the smoke turns black

Most times when an FICM goes it won't run at all. I'm sure they can cause other problems though too.

[kfranklin34]

me again i cheked the voltage on the f.i.c.m and its runing 48 volts will bad fuel make it smoke and missfire i just filled up when the problem started

[m-chan68]

Originally Posted by kfranklin34

me again i cheked the voltage on the f.i.c.m and its runing 48 volts will bad fuel make it smoke and missfire i just filled up when the problem started

Take a fuel sample from the secondary filter housing. Will it ignite and catch fire when you put an open flame to it? Pour it into a styrofoam cup. Does it eat away at the cup?

[kfranklin34]

how long dose it take to eat away the cup

[m-chan68]

Originally Posted by kfranklin34

how long dose it take to eat away the cup

If it's diesel, it shouldn't eat away at the cup at all. If it's GAS, it'll eat away at it within seconds.

[kfranklin34]

we poured it on the grownd and we tryed to light it on fire and nothing happened

[m-chan68]

Originally Posted by kfranklin34

we poured it on the grownd and we tryed to light it on fire and nothing happened

That's a GOOD thing then. For those of you who don't know already, diesel fuel will NOT ignite if you attempt to do so with an open flame.

Back to the topic at hand. You can try draining the fuel from the secondary housing, and try running it on pure cetane booster additive temporarily. Does it cure the symptom when you do this? If it does, you need to switch fueling stations.