Jeff Thomas
New member
- Joined
- Sep 18, 2010
- Messages
- 3
- Tractor
- John Deere 6420
I have a 6420 4wd that runs fine most of time. However, every once in a while it runs rough sounding as though air is in line or it has bad fuel. If you turn the tractor off then on again its solved the problems mist of the time. Changed the filters and checked for air but still does it every once in awhile. I called a John Deere mechanic and he said it could have something to do with a sensor in the fuel injector pump. They are 3000 dollars. Anybody have similar problems?
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