You need a scan tool to read data for injector balance rates. And when you pin point which injector it is,you still need to do a compression test,because,the computer can be getting fooled for a power loss in that cylinder and is adding fuel to overcome it. You really should check the extended warranty for injectors. They had problems either fuel getting into the engine oil or fuel pressure going back to the tank.How do i test a leaky fuel injector on a 2003 duramax comon rail?
Thats not a leaking fuel injector. That is worn piston rings. The smoke is caused by oil leaking into the combustion chamber. The fuel in the oil is the fuel leaking from the combustion chamber to the crankcase.
