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I have a 2006 f250 diesel. about 2 months ago i started to notice some white smoke when i would start the truck in the morning. I took it to a dealer they changed the egr valve and sain the smoking stopped. The next morning when i started the truck it started smoking again. I then took it to the dealer i bought the truck from the put in the new update and sain it was fixed. Before i got home i noticed that when i stopped at a red light and then left when the light turned green the truck would spit out a big cloud of white smoke. The next morning when i started the truck it started smoking again. I returned to the dealer this time they checked the oil and said that the oil level was 4 quarts over filled. They said their was to much oil in the truck and thats why it was smoking. I left with the truck and it continues to smoke when i leave an intersection or thr truck idles for a short time. I then return to the dealer this morning drop off the truck and get a call later saying that the smoke is normal and that nothing is wrong with the truck. does anybody have a clue what could be causing the truck to smoke. I think its a bad injector. Besides the smoke the truck runs great. Please any feed back would be helpfull.
In my experience
Blue Smoke= Oil
Black Smoke= Gas/Diesel
White Smoke= Coolant
One truck, I had a small hole in the head gasket and coolant would leak into the cylinder. This is my reasoning, you come home after driving the truck and the residual pressure in the coolant system pushes coolant into the cylinder. So when you start up in the morning you get a big cloud of very white smoke. As you are driving you dont notice the white smoke as much beacause you are continiously burning it off. Now sitting at a light and as you take off you see a cloud of white smoke. I can not explain as well. Maybe lower rpm's, you looking for it and as you are driving down the road you have the air going around your truck to disperse it. My truck did all of the exact same things yours is doing. Take it somewhere and do a coolant system pressure test, and see if you are losing pressure. That could be your problem especially if you like to hot rod around like me. I blew the head gasket twice in that truck. If they find that to be the problem, make sure they check the head and engine block surfaces to see that they are perfectly planed. And then make fun of them because you diagnosed the problem and their techs did not. You are still under warranty I am assuming
PS. Keep me posted I would like to know what happens
I hope to here from the dealer tomorrow I will give them this info and see what they say. The truck is still under warranty it has 22800 miles. Thanks for the help guys.