JD 318 no spark

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JD 318 no spark

Branden Fonk It would start fine and shut off once it was warmed and I checked it out and bought a new coil still no spark I tore the tractor down and tested things as well I jumped wires across and got some weierd results but not doing what it is supposed to if anyone could help me out I would love to have it run like a deere again
Steve Just got my 345 back from the shop. It's a 2001 with 215 hours. It had the same problem, as well as a gummed up carb.

The little circuit board that the wires from everything goes back to was replaced. Some of the wires now have electrical tape on them, so I don't know what else they did to it. They said the board was about $80, but no returns if it did not fix the problem.

The week before it went out, I pressure washed it - probably messed it up then. Moral of the story - leave it dirty.

Jerry I just went thru the same problem with a JD420 with a 20hp Onan motor in it. It started an ran about 200 yards out in the woods, then quit. I restarted it a couple times and it would run a little bit and quit. I towed it into the barn and got my manual out. According to the JD maint manual checks, there was something wrong with the ignition module behind the flywheel [wrong resistance readings when hot]. I bought a coil and tried it first, hopeing that I wouldn't have to pull the motor. I ended up pulling the motor and replacing the ignition module. I put a new starter solenoid in while I had the motor out. Runs great now. Solenoid, coil, and module were all about $80-90 bucks apiece.

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