David Brown 780

[Anonymous-0]

Tractor will start, runs for awhile and then just dies. I have tried everything and need suggestions.

 

[Anonymous-0]

have you checked the filter and is it diesel or gas?if it is diesel it may have air in the lines another thing is it could be bad fuel.If you need any help let me know
jerry

 

[Anonymous-0]

You might want to check the fuel lift pump.also if the pump isn't working the pin that operates the pump may worn or the cam.I have seen a bad cam already.I left the old pump on and put on an electric pump. I have also seen the lift tube in the tank get a hole in it,had to keep over half full for it to run. Installed a used tank.

 

[Anonymous-0]

Thanks for the suggestions. I have replaced the lift pump, both filters, pulled and cleaned the tank, used frsh fuel, kind of out of ideas. She may run for 6 hours or 6 mins. She will start missing kind of then surge, (rpms pickup) then she just dies. If she sits for a day or two most of the time she will start again, but never know how long she will run. Couls it be the injector pump acting up? I will check the pickup tube in the tank but fuel level doesn't seem to matter. Thanks again for the input and if you have any other ideas I would appreciate them.