Help Needed rough when cold and white smoke

[silver6o]

when I start my truck up in the morning(about 60* here) it seems like it starts pretty rough and knocks hard at idle. Then when I go to drive it its runs rough and blows a descent amount of white smoke and can hardly reach 30 mph. Once it starts to warm up a little(maybe a minute of driving) it runs great and theres no white smoke. Also I noticed just a little before it reaches operating temp while idling it will huff white smoke and when I give it throttle Ill get a small ploom and then it clears up while im cruising.

My only mods are a 4 inch straight pipe, with a stock tune. No coolant missing, and Egr, oil cooler and Head gaskets were replaced 2k miles ago.

thx or any help.

 

[tnsilverfx4]

I'm having the same problem with my 6.4L

 

[silver6o]

any 1?

 

[fordoor]

Fuel filters changed? Bad tank of fuel? Do you use fuel conditioner?

 

[DaveBen]

Let it warm up before you drive off.

Dave

 

[silver6o]

Filters were also changed recently and I've made a good amount of trips to the gas station since it started doing this. Negative on the fuel conditioner

 

[DaveBen]

Try using DIESEL rather than GAS. The proper term is "FUEL".

Dave

 

[Zookie400]

does the smoke smell sweet? how is your coolant level?

 

[jamesjar35]

Mine will puff very light blue more of a white puff of smoke at my morning start up. other than that it won't do it for the remainder of the day?

 

[jamesjar35]

In addition, when it's 45 degrees or higher it won't blow any smoke, 40 degrees or lower is when I notice the smoke.