So what will cause a diesel cylinder not to fire. Glow plug(please explain) i thought they only ran when you started the truck up? Plugged injector bad valve??? low compression? how can i check these easily? Glow plugs. I can pull one out and look at it? Injector? valve-pull the head? compression test.... thanks for your help. I will try and play with it tonight and see what i come up with! Stew
I am not sure if the 6.2 had injectors or used a throttle body type injection (I really have no idea). but if it does then that or a bad valve could be the culprit. try a compression test and a leak-down test and see what you come up with. good luck! EDIT: I just re-read your post, the glow plugs shouldnt cause this, but if you have never changed them then it wouldnt hurt to do it anyway.
I would do a compression test and maybe a leakdown test, and pull that injector and have it tested at a local diesel injection shop.