Diesel white smoke at idle

What could make a diesel engine produce white smoke? What does it mean when a diesel engine is blowing white smoke? Why does my diesel engine have white smoke? What is the reason for diesel smoke? Blowing white smoke is a red flag for your diesel engine, yet we see this happen all the time to our customers.

In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn out injector. I am getting white smoke at idle , and a big puff of white smoke when I accelerate from stop after idling for a few minutes. Seems that everything points to injectors. Is white smoke at idle always injectors, or can their be other causes.

Original injectors were changed about 70K under the special policy because of fuel in the oil. But mostly, it is the incorrect injector timing in the cylinders. Some motors at idle are unable to burn the entire fuel charge because the combustion temperature is insufficient at that regime, what you see as white smoke is indeed raw fuel, it is detrimental. Click here to view this document as a PDF (right-click to download).

A common issue with the GM 6. L LBDuramax engine is white smoke at idle. Worn and damaged injectors are often the cause however there are other causes and considerations that should be looked at prior to injector replacement. For big diesel engines this is big because it is not uncommon for these vehicles to be used for more than a half-million miles before retirement. If you drive one, or see one on the roa you can easily spot a truck with injector issues. At an idle (and worse in gear) these early Duramaxes will haze smoke at idle.

Lots of folks think this is a normal deal for a diesel. That haze is letting you know that one or more injectors are dribbling fuel into the combustion chamber. On the common rail Cummins, white smoke is more characteristic of an injector problem. If the exhaust smells almost like bug spray, it is.

This means that part of the diesel fuel remains unburnt and turns into black soot. It should be taken as an indication that there is a problem existing (or developing), that will potentially shorten the engine life, or result in unnecessary costs. Diesel Smoke tells YOU a Story. A brand new diesel engine running at full load will experience a little bit of blow-by upon startup.

Blow-by is a condition where diesel fuel, air and vapor are pushed past the rings into the crankcase of the engine. Basically, smoke from a diesel engine indicates that something is not right. The truck is 1 stock.

Apparently about 10miles ago the truck began losing power and smoking excessively. This is due to the fact that colder air, which is more dense than warm air, lowers temperatures in engine cylinders at the end of the compression stroke. Unless you have experience in these matters I recommend calling in a pro on this one. White Smoke White smoke can be caused by either excess fuel or an internal coolant leak in your engine. Products designed to flush carbon away from the pistons often cures this problem.

If the white smoke is due to the engine being too cool, adding an automatic pre-heater may eliminate white diesel smoke. I took it to the dealer to have the injectors checked out and possibly replaced under warranty about days ago. They finally got back to me and said that the injectors checked out fine, and they are not sure what is causing the smoke. They do not completely stop spraying fuel when they are OFF.

I have been noticing white smoke at idle for a while now on my 300SD. If I am driving and stop at a red light for a short. It recently started putting out a lot of white smoke at idle. L Cummins engine, and I am having some problems.

Sometimes when it is col the truck sputters and blows white smoke , and it takes a few minutes to clear out. It starts up fine idles ok but white smoke comes out of the tailpipe. I can let of the fuel and it will idle but its rough.

I had a lot of oil in the valley below the Fuel bowl and the turbo.