I have a 1980 IH 384 diesel that I have been unable to start. I am getting fuel to the Lucas CAV DAP injector pump but none to the injectors. From what I have been able to find on the net so far there is a possibility that either the fuel cutoff is stuck or the metering valve might be clogged. I removed the fuel shutoff connecting rod and when operated the lever by hand. It has no resistance. Should I be able to feel something when the shutoff operates?
The tractor has set for several years so I suspect the metering valve could be clogged. The post on the fuel control post i.s bent so not sure how I can get the top cover off to check out either issue but will have to cross that bridge if necessary. The previous owner had the injector pump rebuilt several years ago so I am hoping a stuck valve is my problem and want to exhaust the less expensive and easier fixes before I go down the injector pump rabbit hole.
Also the ignition switch is bad and the original owner added a push button switch to start the tractor. When the switch is turned on the glow plugs are energized and it appears they will stay energized as long as the switch is in the on position. The original switch has 5 terminals and I have been unable to locate an exact replacement. I have found a five position switch but the terminal are in a different order. Do I need to get a five position switch and figure out how to connect it or should I get a 4 position switch and rewire the ignition? Thanks for any replies.
The tractor has set for several years so I suspect the metering valve could be clogged. The post on the fuel control post i.s bent so not sure how I can get the top cover off to check out either issue but will have to cross that bridge if necessary. The previous owner had the injector pump rebuilt several years ago so I am hoping a stuck valve is my problem and want to exhaust the less expensive and easier fixes before I go down the injector pump rabbit hole.
Also the ignition switch is bad and the original owner added a push button switch to start the tractor. When the switch is turned on the glow plugs are energized and it appears they will stay energized as long as the switch is in the on position. The original switch has 5 terminals and I have been unable to locate an exact replacement. I have found a five position switch but the terminal are in a different order. Do I need to get a five position switch and figure out how to connect it or should I get a 4 position switch and rewire the ignition? Thanks for any replies.