1972 ford 4000 3 cylinder no fuel to injectors

ghostrider04

New User
the tractor sat for a few years but i bled the system and she fired up i ran it for a bit and shut it off . tried to start her up again and would not start no fuel to injectors .I took the top off the pump changed the 0 rings and base gasket no more leaks but still no fuel getting to the injector lines. its a CAV pump.anything else i can check without pulling the pump ????
 
Have you changed the fuel filters?? If you have not god chance they have clogged up since it is likely to have problems with any old fuel that would be in it. You also might check that you have good flow of fuel at the bottom of the tank I have seen on a friends 4600 where the tank outlet had clogged up and caused him major run problem that I had to fix
 
yes i changed the petcock at the tank and new fuel filter and pulled the top of the pump and put new 0 rings and base gasket ..bled system to the pump still no fuel to injector line
 
checked the metering rod when the top was off and it was moving and working / no fuel pumping up the injector line from the pump side either
 
Well, if you have fuel to the pump, but nothing coming out, then you either have a stuck metering valve or the pump is flat out not turning.
Since you recently had the top of the pump off, my money is on something that did not go back together properly.
 
everything went back together right i was not getting any fuel to the injector line before i pulled the top so i pulled the top to change 0 rings and check the metering valve it did start and run a couple of days ago
 
(quoted from post at 13:08:54 07/04/17) You say that you "checked the metering valve". Did you actually pull it out and clean it?
yes i did clean it handmade sure it was moving free and easy ..
 

When I changed the filter, repaired a petcock leak and rebuilt the pump top on my 3600 it took quite a bit of cranking with the injector lines loose to get fuel to the injectors. Maybe you didn't give it enough time to fill the tubes.
 
Hi Ghostrider
I'm back on after about 15yrs quiet.
When you state you took the top off the CAV pump and replaced the Orings and gaskets
I take it you refer to the governor top throttle and stop shaft Orings.
You are aware the governor spring under the cover has to be returned to the same hole
positions (three choices 9 options) as it was found.
To be making no fuel at the injectors suggests to me the stop lever is incorrectly
engaged.
When you replace the top, the dowel on the bottom of the stop shaft must be correctly
engaged in the hoop of the flat (hockey stick) strap.
You can kind of feel for this by disconnecting the control rods/cables and operate the
stop and throttle shafts on the governor top by hand.
When the stop lever is put in the stop position (rearward I think) some slack is felt
in the throttle lever thats not there when the stop lever is in the run position.
You may then need to raise the governor top again (not completely) so you won't need
to let go the spring this time, just make sure the stop shaft dowel is engaged in the
flat hooked strap as it needs to be when you bolt the top down.
Phew! long explanation I know, but thats exactly where I'd be looking first.
cheers Rich
 
(quoted from post at 17:08:47 07/05/17) Hi Ghostrider
I'm back on after about 15yrs quiet.
When you state you took the top off the CAV pump and replaced the Orings and gaskets
I take it you refer to the governor top throttle and stop shaft Orings.
You are aware the governor spring under the cover has to be returned to the same hole
positions (three choices 9 options) as it was found.
To be making no fuel at the injectors suggests to me the stop lever is incorrectly
engaged.
When you replace the top, the dowel on the bottom of the stop shaft must be correctly
engaged in the hoop of the flat (hockey stick) strap.
You can kind of feel for this by disconnecting the control rods/cables and operate the
stop and throttle shafts on the governor top by hand.
When the stop lever is put in the stop position (rearward I think) some slack is felt
in the throttle lever thats not there when the stop lever is in the run position.
You may then need to raise the governor top again (not completely) so you won't need
to let go the spring this time, just make sure the stop shaft dowel is engaged in the
flat hooked strap as it needs to be when you bolt the top down.
Phew! long explanation I know, but thats exactly where I'd be looking first.
cheers Rich
the tractor sat for a few years i changed all the fuel filters bled the system the tractor started and ran fine i shut it off for a bit then went to start it and it would not start plenty of fuel at the bleed screw at the pump /no fuel at injectors throttle shaft always leaked so i pulled the top changed the 0 rings checked the metering valve put the spring back in the right hole everything went back together right no more leaks but still no fuel to injector line on top or at the pump...
 

Well, I'm going to say this.... If it looks like a duck and it talks like a duck....... you know the rest.

You tell us you have transfer pressure? It's shooting fuel out to the front wheel from the pump bleeder? So if it's got transfer pressure,
the rear section is turning and the pump shaft is not sheared. Your remaining options are: 1. something went wrong when you installed the
cover and the shutoff bar is keeping things shut down, 2. the metering valve, in spite of your inspection/cleaning, is indeed stuck. 3. The
pump plungers are stuck and will not retract under transfer pressure and hence do not take in any fuel to pump. Those are the possibilities
as I see them.

Rod
 
(quoted from post at 07:47:51 07/07/17)
Well, I'm going to say this.... If it looks like a duck and it talks like a duck....... you know the rest.

You tell us you have transfer pressure? It's shooting fuel out to the front wheel from the pump bleeder? So if it's got transfer pressure,
the rear section is turning and the pump shaft is not sheared. Your remaining options are: 1. something went wrong when you installed the
cover and the shutoff bar is keeping things shut down, 2. the metering valve, in spite of your inspection/cleaning, is indeed stuck. 3. The
pump plungers are stuck and will not retract under transfer pressure and hence do not take in any fuel to pump. Those are the possibilities
as I see them.

Rod
Ok Thank you Rod I re-checked the top end things up there looked fine ....the tractor had sat for a few years fuel tank was empty /dry i changed all filters put new filter petcock at tank new injectors bled system and the tractor started and ran fine i let it run for about 4 or 5 minutes then shut it off for a few minutes . when i tried to restart it would not start so i went thru the bleeding process again and when I got up to the injectors no fuel put my finger on the line didn't feel even a little air so thats when i took the top off I needed to change the 0 rings on the throttle shaft and check metering valve so it was running i tried re-bleeding for a couple of days off and on before I took the top off
 

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