HELP 92 dodge cummins WHITE SMOKEIN
 

i got a 1992 cummins the truck cranks perfect then about 30sec later it starts white smoking and bucking real bad and knocking. but it only after the white smoking.
i got injecters checked there good. any other things that could be wrong
i need help bad

sounds like maybe your injection pump is worn, tell us more about the truck. like how many miles, any performance upgrade... etc etc

Could be the timing, try giving it a little bump.

could be the turbo :argh:

could be as simple as water in the fuel too:humm:

White smoke is usually anti-freeze from what I can understand. Head gasket or cracked head.

:pca1:

mine did that last summer it would start and run then about 30 or 40 sec later start white smoken and boggin down just like you said so i dropped the tank putt new fuel in after i cleaned the tank out i putt a new lift pump in and it still did it turns out mine was the injector pump i mean these trucks we drive are gettin purty old mines 20 now and ima register her as a clasic just because i can:tu: butt stuff like this goes out after a while nothing lasts forever if ya know what i mean butt it could be something just like water in the fuel good luck man:tu:

head gasket have fun:moon:

White smoke means vapor, which means you're either over fueling, (ever see a pulling tractor at idle? :rocking: All that white smoke is unburnt fuel. :s:) or your engine is trying to burn some other liquid. :scare2: Fire it up, and go to the exhaust pipe and snort a line or two. What do you smell? If the scent is strong diesel, you're not combusting it all for whatever reason. If it smells sweet it's antifreeze. :argh::scare2: If there's no smell, drop your fuel filter, (which you should do anyway, just because) and drain it into a glass or other see through vessel so you can see what was in there. If there's water, it'll seperate with the diesel. Good luck!:c:

it sounds like your timing is retarded. anything from a restriction or bad lift pump going to the pump to a weak inj. pump could cause this. i wouldnt think it is the head gasket. check your fuel pressure on the supply side

My truck started doing this after it set for a couple months. Hoping it is water, any one know if lift pumps or objectors pumps like to go out from sitting ?

White smoke is coolant. The reason tractor pulls blow out white smoke is from using water injection. I feel It couldn't be lift or injector pump because they are seperate parts from the block and do not have any connection to the coolant system. Since the truck has been sitting, I would take off the rocker box covers and pressure the cooling system and check for leaks.

white smoke is unburnt fuel. There would have to be a lot of coolant going into your cylinders to turn it white

All you need is a little bit of coolant in your cylinder to make white smoke. Black smoke is unburned fuel. If you push your fuel peddle to the floor you get black smoke, thats unburned fuel.

Ahh, many theories here, Black smoke is from partially burnt fuel not unburnt.
White is usually a miss firing injector, the fuel is not being burnt at all. Did not see where the person resides, common problem on start up in colder climates.
Miss firing can be cold ambient temperature,bad injector or pump and/or timing.
Does it clear up when the engine warms up?
Did it start doing this suddenly or get worse over time?

Black poorly burnt fuel. White is unburnt. Knock the tip off an injector and see what color smoke you get, white. The black is just carbon soot because the fuel is not being totally oxidized when burnt. Just like when you fire up a torch before you put the oxygen to it.

check your antifreeze level