White/grey smoke at full throttle?

[GreenHead_Slayer]

Hey guys i have a 1997 f250 7.3 5 spd when you are at full throttle is putting out whitish grey smoke instead of black. What does this mean? Truck has afe intake, ts performance 6pos chip, 3"mbrp down pipe out to 4" exhuast with straight though magnaflow muffler, and banks intercooler.

[kanuck15]

How old is your fuel filter? Thats where id start, Also winter fuel doesnt quite have the kick that summer fuel has

[GreenHead_Slayer]

Originally Posted by kanuck15

How old is your fuel filter? Thats where id start, Also winter fuel doesnt quite have the kick that summer fuel has

Fuel filter is only two months old with about 1k miles on it. How do you figure there is a difference in fuel between seasons?

[kanuck15]

Its a known fact that they thin down the diesel in the winter for gelling reasons. Thats why in the winter you hear everyone complain about low mileage and whatnot. If the filter is ok Id check the Fuel Pressure Regulator screen next

[elrojo63]

Fuel Pressure Regulator (FPR) Screen Writeup

[GreenHead_Slayer]

Originally Posted by elrojo63

Fuel Pressure Regulator (FPR) Screen Writeup

Thanks this is an excellent write up should be a sticky! When I have some free time in the next couple days I am going to try this and see what happens.