I have a 5.9L cummins, and have blue smoke cominf out of my exhaust. I know that blue smoke means oil is burnin somewhere. /i have a loud pinging soundor knocking rather. Could it be a lifter cracked wiwth oil getting into one of the cylenders or a gasket busted? Any advvise would help.

 

How many miles you got?

sounds like an injector....do you run a fuel additive?

Are there any codes?