Originally Posted by T Schmidt
My truck is at the dealership with the engine light on and pouring white smoke on take offs and its low on coolant but no leaks. The truck has a S&B intake, 4 in. exhaust no cat or muff. 4 in. lift with 35 Nittos. The tech. says it has egr codes but says coolant problem is not effected by the egr codes. Could someone here help me understand or solve this problem, its the 3 time in 6 months its at the dealer with egr problems thank god for 5 yr. 100000 mile warranty. Thanks for the help.
Sounds like you have a ruptured egr cooler bud. Dont let them replace the head gaskets
. Most inexperienced repair facilities see the 6.0 and automatically assume thats what it is b/c of the poor repuatation following these engines. If they couldnt figure out a simple cooler issue after 3
occurences, they obviously dont have very much experience with these motors. The smoke is the build up from the leaking coolant into the intake. It is a very small leak im sure, otherwise the engine would hydralock when shut down. When you accelerate, the motor increases boost and flushes the residual coolant into the cylinders from the intake manifold and reults in an incomplete combustion b/c of the antifreeze/water introduced. The hotter the engine gets, the more pressure builds in the cooling system, forcing more coolant into the intake through the egr cooler and egr valve port. If you can I would delete the cooler or replace with an aftermarket piece.