JD790 will not start

   / JD790 will not start
  • Thread Starter
#11  
Camofurever1 said:
I could be wrong, but I believe the yanmar diesel in the 790 is self priming.
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it is self priming but I do not hear a click off the solenoid. If I pull it out - does fuel spills out? It has 3 wires to it... how do i bench test it? Thank you
 
   / JD790 will not start #12  
If you take it out, the tractor will start,,,
BUT,, the engine has no way to shut off!!
 
   / JD790 will not start #13  
Galan27 said:
it is self priming but I do not hear a click off the solenoid. If I pull it out - does fuel spills out? It has 3 wires to it... how do i bench test it? Thank you
Click to expand...
No, no fluids should spill out. Before you pull it, take a meter and see if it is getting voltage when you turn the key on. If no voltage, then it could be a blown fuse, a bad wire, bad connector or a bad connection on the ignition switch......or, a bad ground connection.
 
   / JD790 will not start #14  
   / JD790 will not start #15  
   / JD790 will not start #16  
You might have a thermistor in the solenoid wiring. They sometimes go bad.


No “click” check the thermistor first. They have been known to fail. It should be located behind the fuse block. It’s ten dollar item. Easy to access and replace.

The solenoid engages the injection pump. It does not involve the fuel supply directly.

Just look up jd thermistor. Lots of information.
 
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