1800D Won't Start

duckrock

Member
I've got an 1800D that was last ran three months ago. Went to start it yesterday and it turns over, but won't start. Used a bit of starting fluid and it would fire then die out. I'm guessing its a fuel flow problem. This tractor has sat for longer periods of time and still started right up. Tonight I planned to try and bleed the fuel system. Is there anything else I should look for/try?

Also, the throttle lever has always been very loose. Previous owner wedged a splinter of wood between lever and tin to keep lever from bouncing around. There no bump or friction between fuel flowing and fuel shut off when pushing the throttle lever up. Would a new friction disc in the linkage fix this or is it an indicator of a problem in pump?
 
Throttle needs friction disc tightened, or a new one. Pump MAY have internal pump parts stuck inside from setting, have been seeing more of that lately at pump tear down on pumps in for repair. Any traces of water in fuel, or bio fuel will cause valves and rotor plungers to stick causing no fuel to injectors.
 
Time out from fuel flow problem. Put the battery in the tractor and had no voltage on gauge. Found a loose battery cable at solenoid. Then threads stripped off terminal. Then I found a second solenoid zip-tied up under dash. Its broken off at the mounting bracket. Solenoid under dash clicks for pre-heaters. But, is a 172 diesel supposed to have two solenoids? Anyone have a good 12v wiring diagram for a 172 diesel, or is it the same as a 172 gas? Now instead of wrenching on the tractor I'm digging through boxes that haven't been unpacked from our move.
 
Found one manual and it does show a starting solenoid and pre-heater solenoid. Does anyone know of brand/type/part number for a pre-heater solenoid that can be found at a local auto parts store?
 

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