I heard that if you put a turbo it forces air into the engine and makes your disel smoke less. im about to get a chevy c/k 3500 1 ton and the guy told me it smokes at idle and smokes more when driving down the road. i was told it can be reduced by puting the turbo on and that it can be the oil rings.

 

if its smoking at idle, and not have big injectors in it, id say it was the rings and turbo wnt help that. if its blue smoke stay away or prepare for a rebuild

 

Sounds like a 6.2L engine. Its normal for them to smoke a little and they carbon up really bad sometimes, plus it sounds like the owner hasn't put a hard right foot in it for a while. Doing this a couple of times from a dead stop should clear it up. Lots of black from the start as it eases into a light gray is normal. White smoke is coolant and blue smoke is oil, both of these are bad.


Kris

 

It is black smoke i think. But i can't complain its a free truck.

 

get it and drive it like ya stole it

 

White smoke while cranking can also mean partial or incomplete combustion (bad glow plug or dripping injector).
Blue smoke is usually oil in combustion chamber.
Black or gray smoke usually incomplete combustion due to more fuel than air (raw unburned fuel going into the air.) Can be caused by number of things, bad injector (s), injection pump set too high, high altitude to name few. Yeah, turbo will help burn fuel in combustion chamber, along with any oil.
If combustion compression engine running "right" should only see vapor trail from stacks except during turbo spool up. After its loaded, nada.
All gray-black stuff into air is unburned fuel.

 

Thanks for your info. It's helping me get ready to work on it this summer when i go get it

 

Oh and don't put a turbo on a 6.2L engine. They have way too of a high compression ratio and you'll blow the engine.




Kris

 

That's the first time I have heard someone wanting it to smoke less !!

 

Smoke at idle, sounds like injectors or a head gasket issue. Monitor the coolant and oil.