HAVE A JOHN DEERE 318 LAWN TRACTOR, CHANGED POINTS AND CONDENSER, WON'T TURN OVER, TRIED STARTING FLUID IN CARB AND NOTHING. CAN IT BE THE COIL AND HOW DO I CHECK? THANKS

ck here...

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I had a JD 111 rider that may have had the same problem. Turned out to be the fuel line had a weak area and would **** together and not allow the fuel through. It's a cheep place to start.


Good luck!!

I had a similar problem lasy year.
Try this:
As soon as the machine seems to be stalling, loosen the gas cap.
If the engine continues to run, clean the gas cap vent hole(s).
Gary

On the later models with the 220 series engine you would have a trigger/pickup coil mounted just below the stator with 2 screws.After reaching full engine temp the coil will short out.This has been a problem for the later 318's.On the earlier models with the 218 series engine (the one with points)I would suspect the ignition module under dash.

At that age, it's highly likely that there aren't any! You don't say what engine is fitted, but if it's a Briggs or a Tecumseh, they went solid state in 1982. If that's the case, just replace the coil module.

possibly a carb or coil problem. does it have point type ignition? if so try replacing the condensor.if nothing else changes try replacing the fuel filter. then nothing,a float sticking in the carb or a bad coil.

did you make sure the gap was set right on coil & flywheel it should be .020 between magnet on flywheel & the coil & the same thing with the points in the open possition between points & condensor

ok, since you have the points, I assume you have the B43g Onan
engine. Was it running before the new parts were installed?
Check your point gap and make sure it is .016, plugs ahould be gapped at .025 Make sure your plug wires are good too. Should be somewhere between 0 and 10,000 ohms per foot, when measured with an ohmmeter. Once everything is rechecked for gap distance, make sure there is no spark by pulling plug out, leaving wire on and ground the outside of plug to the chassis of the tractor.
Crank over and look for the spark. Coils are about $100, so you want to eliminate everything else first.
Diagnosing a points ignition for no spark is really simple. Do you have 12V at the coil? Do you get a spark when you connect and disconnect the negative terminal of the coil to ground? If not you have a bad coil.

The electro-magnetic coil side of your PTO is shorted out.On the 318 it is very easy to replace,just under front screen.