this is my first diesel i bought it used. My truck smokes while idle but when under acceleration there is no smoke.

 

first of all welcome to diesel bombers and how bad does it smoke does it still run good under acceleration. is it using oil, look for fuel leakage or seepage at fuel lines or hoses and fuel filter them are the easyist and the fastest good luck and thanks for being here

 

White smoke at start up is fairly common, especially if glow plugs are weak/gone/not igniting, if it is smoking white after hot, at idle, it could be worn valve guides, how many miles? Also a sign of low cylinder temp. while running or at idle? Codes? Timing? Weak injectors? Do you have good compression;check? Check for blow by out of oil fill/dipstick and other breather type orifices, previous owner may have been slack on oil changes. If injectors are weak, Injector Pump is working hard as well...add at least one pint of Yamalube - 2 stroke oil per fill up, it will lube/'massage' Inj. Pump internals as well as injectors like giving them a visit to a ***** house. Does your rig emit obvious black smoke under full throttle? Check out trouble shooting/diagnoses questionaire on this site, it is very helpfull for feed back.

 

Basically - theres inst enough heat to burn the fuel. Could be bad grid heater, injector(s), retarded timing, worn injection pump, air in the fuel system, or low compression.

Read this: Light-Duty Diesel Diagnosis

 

Sounds like a bad injector or injectors. Only way of telling is bring it to the dealer.

 

well if its yours frist find buddies wit diesels cause dealers are expesive. everything i ever done to mine its my own work cause i work on tractors all the time on the farm. als wat make.

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ok since you have a cummins its a bad grid heater, injectors or injection pump, saw this once before but the guy screwed me on money and i forget wat i did to it and i dont talk to him so i cant call and ask him. ill ask they guy who works on my bosses semis and let you know soon

 

i have 127,000 miles on it i bought it used there is a edge mileage max chip with a 4" magnaflow and a s&b cold air

 

That many miles, and a chip that raises rail pressure, your injectors are in need of replacement.

 

Updates?

 

Please update.