MF 175: unable to get fuel to injectors

[unclelaurent]

Hello to fellow Massey Ferguson owners. I recently purchased a MF 175 with 150 hours on a rebuilt Perkins diesel engine. The seller told me that "all" I needed to do was re-torque the head bolts, since 150 hours had passed since the rebuild. I drove it home and it was a gem to ride. So, I mounted the tank on a frame 2 feet above the engine and connected the fuel lines, and the tractor ran with that configuration. Then, it sat for 6 or so months while I worked on a "honey do list". Alas, when I returned to continue the task, the tractor would not start. Turned over just fine, but no fuel to injectors. Bled the filters and the top and bottom fuel pump--no fuel to injectors. Today, I detached one of the injector fuel lines at the pump, and no fuel comes out when I turn the engine. Same with the other three. HELP. I am frustrated.

 

[marlyman]

so is there fuel coming put the two bleed screws on the injector pump?

 

[Jim.ME]

Hello to fellow Massey Ferguson owners. I recently purchased a MF 175 with 150 hours on a rebuilt Perkins diesel engine. The seller told me that "all" I needed to do was re-torque the head bolts, since 150 hours had passed since the rebuild. I drove it home and it was a gem to ride. So, I mounted the tank on a frame 2 feet above the engine and connected the fuel lines, and the tractor ran with that configuration. Then, it sat for 6 or so months while I worked on a "honey do list". Alas, when I returned to continue the task, the tractor would not start. Turned over just fine, but no fuel to injectors. Bled the filters and the top and bottom fuel pump--no fuel to injectors. Today, I detached one of the injector fuel lines at the pump, and no fuel comes out when I turn the engine. Same with the other three. HELP. I am frustrated.

Likely some of the pump internals have stuck from setting. Did you leave the shut off pulled to the stop position while it was setting? What type diesel are you using? plain or bio-diesel?

 

[Dieseltech]

Sounds like the rotor plungers and/or the metering valve is stuck. ANY traces of water in fuel, or Bio diesel will cause this trouble. I see this often on pumps in for repair.

 

[unclelaurent]

so is there fuel coming put the two bleed screws on the injector pump?

Thank you for responding. I have the tank up on a frame about 18 inches above the valve cover. When I open the injector pump bleeds, diesel flows out freely by gravity without cranking engine.

 

[unclelaurent]

Likely some of the pump internals have stuck from setting. Did you leave the shut off pulled to the stop position while it was setting? What type diesel are you using? plain or bio-diesel?

I do not remember position of shut off while it sat. I am using plain off-road diesel.

 

[unclelaurent]

I have determined that fuel is getting to the pump, but does not exit the pump into the lines to the injectors. So I am going to get the pump rebuilt. How to I make sure that the timing is correct when I reinstall the rebuilt pump? Is there anything that I should do before removing the pump to insure that the timing will be correct once it is reinstalled?

 

[unclelaurent]

I have determined that fuel is getting to the pump, but does not exit the pump into the lines to the injectors. So I am going to get the pump rebuilt. How to I make sure that the timing is correct when I reinstall the rebuilt pump? Is there anything that I should do before removing the pump to insure that the timing will be correct once it is reinstalled?

 

[Dieseltech]

I have determined that fuel is getting to the pump, but does not exit the pump into the lines to the injectors. So I am going to get the pump rebuilt. How to I make sure that the timing is correct when I reinstall the rebuilt pump? Is there anything that I should do before removing the pump to insure that the timing will be correct once it is reinstalled?

No flywheel timing needed, just remove/replace the pump. Remove the cover in front of the pump drive gear, then remove the three gear bolts into the pump drive hub. Pump van be removed rearward after the lines and stud nuts are off. When going back on make SURE the gear pin is in the drive hub notch and timing is done, using the scribe lines on pump flange and timing gear case. I just repaired a 135 pump for the same trouble, found the rotor plungers stuck when I got it apart.

 

[marlyman]

 

[miangus]

As you are adjusting the valves you must have done major work on or around the fuel system. Just a few simple things to look at. The shut off can be install so it works in revered mode. It takes a good stream at the bleeders not just fuel with bubbles. I open the bleeder and crank the engine until I get a good spry. I usually have to crack one of the injector lines. Oh, and you must get fuel on both your pants and your shirt or a Perkins will not start.