Fuel injector leak-off line replacement

Fredevans

New User
I have a 1964 ford 4000 4 cyl diesel. It has been sitting (covered) for 18 years and i am trying to get it running. The engine is not seized it turns over quit nicely. It seems my only problem is the fuel injectors are not getting fuel. The pump seems to be working since i took off a bolt and tried cranking it and it started shooting a lot of diesel everywhere. I think it may not be starting due to the fuel injector leak-off lines being broken. I have looked everywhere and cannot find the replacements. I think i can fabricate a line for the leak-off line that comes out of the injector since the part that broke was a rubber line. As for the super small injector leak-off copper line that comes out of the side of the engine i am stumped on how to replace it, any suggestions? and does anyone think this is the reason the tractor i will not start?

Thanks
Fred
 
Super small copper line?

Any way to be less ambiguous?

Is it from the head ? (temp probe)

Is it from behind the hydraulic pump? ( oil pressure line).

Why not try to follow that mysterious line and see where it goes.. Or post us a pic!
 
(quoted from post at 09:10:55 05/18/15) Super small copper line?

Any way to be less ambiguous?

Is it from the head ? (temp probe)

Is it from behind the hydraulic pump? ( oil pressure line).

Why not try to follow that mysterious line and see where it goes.. Or post us a pic!

It is none of those it is one of the two injector leak-off lines. It returns unused diesel back to the tank. I will try to post a picture later on today.
 
(quoted from post at 16:09:07 05/18/15) No offense intended here, but what makes you think a return line, or absence thereof, will have any effect on the pump supplying/not
supplying fuel to the injectors?

None taken, i figured since the system had to be pressurized that may be why the injectors were not receiving fuel. Im open to any suggestions as to why they are not. The fuel pump seems to be spinning as it shot diesel everywhere when i took the "out" bolt off the side.
 
You're right in the sense that the system does require pressure, but the fitting(relief valve of sorts) in the pump cover, to which the
return line attaches, is responsible for restricting the fuel escaping back to tank and thereby controlling the case/transfer pressure
that builds within the pump. The return lines themselves actually play no part in this. If the tractor has been parked for a number of
years, I would bet either the metering valve or the pumping plungers are stuck, so even though the pump may have good supply and plenty
of transfer pressure, it simply cannot deliver any fuel out the high pressure ports. The metering valve is accessible by removing
the top cover, the plungers require more dis assembly than I would recommend.
 

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