Hey guys, my truck has a very very slight hazy greyish smoke at idle sometimes. It's there, engine hot or cold. You don't notice it till you back up to a trailer and start hooking on. It's so slight you have to look at the exhaust just right to see it. It burns your eyes so it's rich, but what would be a cause of this? I'm changing my injector o rings this weekend with a fresh oil change but is there anything else that can cause that? I have stage 2 injectors, could my gtp38r be causing this? It's only got 50,000 miles on it or so. The truck runs great, uses 1 quart of oil every 5,000 miles or so, no coolant useage. There is no blowby however it does have white smoke coming out of filler neck, more smoke then usual as I've checked this a year or so ago and it didn't have that much smoke coming out of the fill pipe. But I'll check that after my o ring swap and oil change. Thanks everybody!

 

Yes injector 0-rings. What does fuel bowl look like? Not really bad though 1 quart every oil change.

 

Second what Whitey said-high pressure oil is leaking into the fuel side, giving you an oil/fuel mixture being injected into the cylinders. To be honest with you, besides o-rings, another less common cause of this is internal injector leaking of high pressure oil directly through to the fuel side of the injector.
Larry

 

That's what I figured, an internally leaking injector is another thing I was worried about. These are stage 2s and they have around 50,000 miles on them or so as well but anything can happen at any time. Well I'm going to hope for a bad injector o ring, I used aftermarkets so then rolling or just being junk is a big possibility too.

 

Hey guys, I wanted to say thanks for the quick replys, sorry I haven't been on in a few days, been pretty busy at work. I was just wondering if by chance it is a problem internal to an injector, o ring or what not, should I attempt to rebuild them? They are a couple of years old and have atleast 50,000 miles on them and are stage 2s. Am I better off buying a new stage 2 injector and swapping it injector for injector till I find the culprit? A long arduous task but sometimes that's just life. Is there any chance the amount of oil being discharged out of the top of the injector would be less or effected by this internally leaking oring as compared to the other injectors? That would help pinpoint it down. I'm still hoping for bad external injector o rings just haven't had a chance to do them yet. I will check fuel filter this weekend to look for oil in fuel bowl and filter before I do them as well.