Injector return lines on NJ385B in a Lenar 254-2

[Mike Collin]

I have no fuel flowing out of the leak off lines on my Lenar 254-2. The engine runs smoothly with no excess smoke. I took the banjo fittings off of each Injector with the tractor running, and no fuel spits out. You can definitely see fuel sitting in each injector. Just not flowing out. Is this common with these engines. I have dealt with Kubotas, and have always seen fuel flowing out of the return lines.

 

[Bob Rooks]

I have no fuel flowing out of the leak off lines on my Lenar 254-2. The engine runs smoothly with no excess smoke. I took the banjo fittings off of each Injector with the tractor running, and no fuel spits out. You can definitely see fuel sitting in each injector. Just not flowing out. Is this common with these engines. I have dealt with Kubotas, and have always seen fuel flowing out of the return lines.

You shouldn't see any fuel in that line unless the injectors are worn and leaking by (that's why it's called a leak-off line), but depending on how the fuel system is plumbed you could see fuel from the lift pump by-pass returning to the tank. These are not unit type injectors (neither are Kubota's).