kubota M5-111 fuel not getting to the rail

   / kubota M5-111 fuel not getting to the rail #1  

Bmbcattle03

New member
Joined
Jun 6, 2022
Messages
2
Tractor
Kubota m5-111
tractor cranks but no start the electric fuel pump keeps pumping no matter how long you leave key on. fuel getting to the supply pump but not to the rail it seems to keep going threw the return back to the tank
 
   / kubota M5-111 fuel not getting to the rail #2  

dodge man

Super Member
Joined
Oct 25, 2008
Messages
8,895
Location
West central Illinois
Tractor
JD 2025R
Looking at the specs it looks like a common rail system. I assume the injectors fire electronically. I’d start by looking for wiring problems, mice damage etc. I assume the fuel filters are good?
 
   / kubota M5-111 fuel not getting to the rail #3  

thepumpguysc

Elite Member
Joined
Apr 14, 2010
Messages
2,674
Location
South Carolina
Tractor
Injection Pump Rebuilder
Most cr systems I’ve worked on have an overflow banjo bolt in the end of the rail..
It holds pressure in the rail and opens when there’s to much..
U might wanna look for it..
If the supply pump is pumping to the rail and it’s returning.. the spring might be broken or the ball valve stuck open.??
 
 
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