Got a fella in camp with a 7.3 that has 479,000 miles. It won't start. It smokes out the pipe when he cranks it. I have already talked to him about my opinion. He disagrees. He just keeps charging t...
Hard to tell, my guess would be the glow plugs or the glow plug controller. With good batteries and good glow plugs/controller not much ever stopped the 7.3 With all those miles on it maybe it just got tired and laid down on him.