RayRaysJukeJoint
TYF Newbie
I have a 2015 yukon xl with the 6.2. It started misfiring on 8 and so far I have done the following.
1. New Plugs
2. New Plug Wires
3. New Injectors
Still, the misfire is there. I get the P0300 and then the P0308 code and I am at a loss as to what to try next.
Oh and I swapped the coil out with another cylinder and that did not change anything. The only thing I can think of now is the wiring harness and I am not sure how to test those. I can figure out the coil probably but how the heck can I test the injector wiring without taking the intake manifold off again?
Also, I don't think it is the lifter issue because #8 is not a DOD cylinder.
Any help would be greatly appreciated!
1. New Plugs
2. New Plug Wires
3. New Injectors
Still, the misfire is there. I get the P0300 and then the P0308 code and I am at a loss as to what to try next.
Oh and I swapped the coil out with another cylinder and that did not change anything. The only thing I can think of now is the wiring harness and I am not sure how to test those. I can figure out the coil probably but how the heck can I test the injector wiring without taking the intake manifold off again?
Also, I don't think it is the lifter issue because #8 is not a DOD cylinder.
Any help would be greatly appreciated!