Does anybody know if it's normal for my lly duramax to smoke (oil) on the start-up? The truck just started doing it when I hit 103,000 it's not burning or losing oil or pressure.

Thanks, Dually04

 

what does the smoke smell like?

 

the smoke smells like oil/ diesel exhaust.

 

can you do a balance rate test on the truck, it sounds like am injector

 

Yeah that's not good/normal...Something's leaking!

 

The first thing you need to check is to make sure the PCV system isnt plugged. If it is you will get a white smoke from your exhaust. If the PCV is ok then you most likely have a bad injector thats leaking past the seat until it warms up. Check your oil level and see if there is diesel in it.

 

sounds like you"ve got a bad barrel and it's over fueling when you shut it down and it loses rail psi.