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Blue Smoke on Takeoff

1K views 5 replies 2 participants last post by  jimmyv13 
#1 ·
I've been searching through old threads and posting about my issue, but I might as well see if I can get some attention with my own truck. Blue smoke started about a month ago. A bluish trail appears once the truck gets to about 2K RPM's and continues until it shifts from 1st to 2nd unless I floor it, then it'll smoke again as it hits 2K RPM. It smokes a little worse when the fluids are not fully warm. FMP is never less than 47.5, fuel pressure is 64 at idle and always over 60 unless WOT, then it slowly falls to 56 in the upper RPM's. I don't know if the smoking issue is related to my surging issue, but the truck surges pretty bad when cold. It cleans up a bit when at operating temp, but slightly evident when fluids are over 190. The boost bounces quite a bit. WOT runs yield 24ish down to 19ish and is moving constantly. Cruising at 70, the boost still bounces +- 2PSI on a flat HWY. VGT seemed to be very stable and within spec while cruising and idle. Fuel mileage is pretty much awful, 11.8 City and 15 HWY.

No boost leaks that I can see/hear. All CAC boots are less than a few months old. The VX9F strategy eliminates the EBP sensor value, correct?

Anybody know where I should start?
 
#2 ·
Blue smoke is useually raw lube oil trying to be burned. Do you see an ecessive amount of oil in the intake duct? The air turbine seal may be leaking or your ccv filter may be saturated altho I am not shure how that would affect your boost issue.

I would suspect possibly low pressure oil fluctuateing but you say vgt stays stable so thats kinda out.
I am not shure on which flash version it was but they did do away with actual ebp and used an inferred ebp. This also was later done away with because of issues it caused on it's own and they went back to actual ebp.

I am not shure I am actually helping any but just puting out the info for you to consider.
 
#3 ·
I'm not sure what "excessive" is, but there is oil still in the intake ductwork. I can snap a pic of it, but it seems less than when I had the OEM CCV and I've never blown a boot....yet.

My CCV catch can is almost completely dry aside from a few specs of oil on the stainless mesh screen and absolutely nothing in the "cup".

I didn't know they went back to the actual reading for the EBP, thanks for correcting me. Still leaves a question, I guess, unless someone knows which strategy uses it and which does not. Maybe a call to Matt at gearhead to see if he knows.

I'd like to get this figured out before the temps get too low around here...working on a vehicle in the snow sucks and I'd like to avoid it if at all possible.
 
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