Smike sighting

[villestrip]

So a little history on my truck. It has about 88,000 miles on it. Always have used Rotella 15w-40 oil with a Motorcraft oil filter. Change the oil between 3 and 5000 miles every time. Truck has had the HG redone by Ford and the FICM replaced. Also they replaced the HPOP STC fitting. Truck has no tune and it has no muffler and no cat. Has a delta of 5-8 degrees.

So now the problem I am having. When I drive the truck it runs great. Also the trucks fires up right away and the idle is smooth. Only problem is when I stop at stop lights or anywhere and the truck is idle, when I go to take off a bluish puff of smoke comes out. I have read a bunch of threads with blue smoke issues and the replies vary from turbo seals to injector stiction.

I also called a shop here locally and he was leaning more on the injector side. He was saying an injector could be spraying in extra fuel and because its cold fuel and not hot fuel it is coming out bluish rather than black.


I am definitely switching to Rotella T6 just because it seems its the more superior of the two oils. I was also thinking of the whole rev-x additive. Do you think that will help or do you guys believe it is more likely a turbo issue??? Thanks for the help.

[Tuscany]

I would have to say if it is blue smoke than you are burning oil somewhere. Pull your oil fill cap while the truck is idling and turn it upside down and set it on the tube. If there is excessive blow by it will push the cap off of the fill tube.

White smoke = Coolant or water
Black smoke = Fuel
Blue smoke= Oil
Whitish Grey smoke = To much fuel being dumped in at idle and slightly above idle.

[villestrip]

If I was burning oil wouldn't my oil level be low also???

[Tuscany]

Not necessarily. It doesn't have to burn a lot of oil to smoke. A little goes a long way lol.

[villestrip]

Maybe the smoke is whitish grey. Ahhhhh!!!

[villestrip]

Maybe it would be easiest just to take it in. Its still under the extended warranty. It's weird cause it doesn't always do it.

[Tuscany]

If it is whitish grey that could be caused by stiction in the injectors. Switch to T6 synthetic oil and add archoil 9200 to it and try that for a while.

[g2shuck]

use archoil 9100

[Tuscany]

9100 lol sorry got it confused with the fuel additive archoil 6200

[g2shuck]

just giving u a hard time bryon and damn that was a fast reply