I am working on a 03 and it blows white smoke all the time. I do not know if this is normal but it sure seems to me that somthing is wrong. Any one have one that has done this. It blows the most after it idles for a while and then take off. Cold or warm days, up to temp it dont matter it will still do it. Thanks for the help. Adam

does the exhaust smell sweet? how many miles on the motor, and is there are fuel in the oil. how does the coolant look. And are there any codes, you should try and see if you can get a balance rate test done

2500HeavyDuty's Sig:

It has 55k on it. No codes yet and the coolant is staying the same. There is no fuel in the oil that I can tell. The exhaust has a smell of oil more then any thing but its not using any oil. I have checked all that I know to check. I have thought maybe that its the fuel that is being used in this truck but the guy never uses the same place. How much would a balance rate test cost?

if you have someone near you with a tech II, efi live, preadtor tuner you can get them checked.

i dont know how much it would cost. If it is injectors the dealer should replace them at no cost

Leaky Injector. LB7s are known for that..Or leaky return lines.

hotlb7's Sig:

2003 LB7 With 90hp Dragon Flow injectors,Fass fuel system, EFi live tans and engine,4inch magna-flow , boost valve, AFe intake. On 285 tires whith OEM wheels ( Grand Daddy style).

if he had leaky return lines he would have fuel in his oil.