180 injection pump problems

[Clyde Parrish]

O.k. Let me explain what I have done then someone fill me in on where I am going wrong.

I bought this 180 not running and not getting fuel to the injectors. No problem there now I get it home check it out see that there is fuel flowing from the tank. Undo some of the lines make sure the lift pump is pumping. All that is ok. I loosen the lower bleed screw and crank the engine and fuel jets out. I loosen the top fuel screw and fuel will jet out there. But still no fuel to injectors. I make sure the pump is turning and the gear is turning all is ok. So I say hey the injection pump is bad. soooooo I order a injector pump from a junkyard guaranteed to be good.


Injector pump comes in I install it. Bleed everything several times guess what? Still no fuel to the injectors. Someone tell me what am I missing. What is the chances of having 2 bad pumps. I am going to call the junkyard tommorrow. Thanks for any help. Clyde

 

[Anonymous-0]

You say no fuel to the injector, have you craked the injection lines lose at the injectors to prove no fuel there ? If you have not done that just crack 2 lines and crank it over, the lines may be air locked and it may start, if it does start tighten lines while running. Hope this helps you. Don Snyder

 

[Clyde Parrish]

Yes I have cracked the lines. I have them all cracked.

 

[teighs]

Let me ask the obvious:

Is the fuel shut off in the on position?

Is the throttle advanced?

If not then you are not asking the pump to send fuel to the injectors. Be sure that both functions are happening at the pump, not just at the operators station, you may be chasing bad linkages.

 

[TEXAS TIM]

sir these pumps will stick with fuel shutoff stuck closed as bad as it sounds remove the injection lines from the pump make sure the shut off lever is in the on position with full throttle and lightly tap on the side of the pump while cranking it get someone to help you . if you still get no fuel after that take pump to the injection shop it an easy repair .