318 stalls while mowing - again and other electrial problems
318 w/ P218G Gremlins’
Help! I have a 318 w/ P218G Gremlins that have moved in and taken over. Some background, I have been fighting a backfiring problem all summer to no avail. Now it has infected the starter as well.
The engine used to fire right up and run fine as along as I did not engaged the front PTO. If I engaged the front PTO to mow, it was good for about 10 to 15 minutes until everything warmed up, then the missing/backfiring would start as soon as the front tires were just slightly below level. Mow on the level or uphill, NO Problem. Mow down hill, missing, backfiring etc to finally stall. Disengage the PTO and it would start right up again.
Now, the starter will just bump the fly wheel but not turnover??? WTH!!
Repairs that I have made since buying the tractor 3 or 4 years ago:
New Electric clutch (front PTO) – from JD
New Voltage regulator/rectifier – from Onan
New condenser – from Onan
New Coil - from Onan
New plug wires, (one plug wire was bad) – NAPA
Carburetor rebuild by Independent JD certified mechanic,
I replaced the fuel lines and have emptied the fuel tanks several times and replaced the tank pick ups
Mechanic did a leak down test and everything is/was fine
New stator – from Onan
New ignition module, ignition trigger, and stator – Onan, I did not replace the trigger (the trigger is install with the “this side to flywheel” ) until after the carb rebuild and was advised to do so, that is when the starter problems occurred.
The tractor came with the starter improvement kit.
All of the electrical components have been tested time and again and are with in spec.
I am at my wit’s end with this.
Any and all suggestions are welcome.