Oil & Fuel JD 318 stops running

/ JD 318 stops running #1  

Sissybitus

New member
Joined
Oct 16, 2012
Messages
17
Location
Crossville, TN
Tractor
John Deere 318; 1987
1987 JD 318 Onan Motor. Will run for 20 minutes, then just shuts down. Wait about 15 minutes and it starts up again and then does the same thing.
 
/ JD 318 stops running #2  
When it shuts down have you checked for spark. maybe the coil is heat failing.
 
/ JD 318 stops running
  • Thread Starter
#3  
When it shuts down have you checked for spark. maybe the coil is heat failing.

Thank you, I will check for that. I had thought it might be the new gas cap, it didn't have a vent, so I put on a vented cap, but haven't had a chance to test drive.
 
/ JD 318 stops running #5  
All good guesses for symptoms.
- Coil
- Bad tank vent
- Fuel line either getting too hot (vapor lock) and/or
- Fuel line weak enough that it collapses and pinches itself (is this possible?) .
 

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