John Deer 4020 starts then kills

   / John Deer 4020 starts then kills #1  

Jmounger

New member
Joined
Sep 24, 2014
Messages
1
Location
Lettsworth, Louisiana
Tractor
John Deer 4020
any suggestions, my John Deer 4020 starts and runs for 1 to 3 minutes the dies.
 
   / John Deer 4020 starts then kills #2  
Fuel ...In order of checking... tank outlet, fuel filter, lift pump, injection pump.

What injection pump does the machine have. Stanadyne pumps have a check valve that gets clogged. Then performs as you describe. Means the pump is on its last legs.
 
   / John Deer 4020 starts then kills #4  
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