They dont use glow plugs. What Rumblefish 72 said makes sense. I have even had the linkage off the fuel solenoid get rusty and stick where ssometimes the truck wont run and then sometimes it wont shut off. It has the two windings in the fuel cut solenoid as it kinda like a starter that has the pull-in and hold-in windings. But I have seen the ball sockets on the linkage that moves coming off the fuel cut solenoid get very rusty and stick. Ron