Bummed out

[Dieseltech]

I did. If not due to INLET restriction its RETURN restriction, which will cause pump shut down.

 

[moresmoke]

X2 on Dieseltechs comment. Fuel return line is plugged. Probably in the fitting on the pump top cover. The governor in those pumps works on fuel pressure. When the pressure builds in the case due to a plugged return, it shuts the engine down.

 

[Dieseltech]

Pump stops moving fuel to injectors when the HOUSING pressure rises high enough to equal TRANSFER pressure, which stops the rotor plungers from moving. Plungers/rollers move outward during charging cycle, cam ring lobes mechanically force plungers inward during injection cycle. Both Roosa/Stanadyne and CAV DPA rotary pumps will shut down when return fuel is severely restricted or plugged completely. Quick test is to loosen the side timing cover and let fuel leak out of housing. If engine runs WITH the leak but dies with cover tight, it's confirmed return side is the problem, USUALLY due to pump needing repair.

 

[used red MN]

Hello Rick welcome to YT! Since you are new here I will
give you a bit of some inside details. Others have taken
you down a fairly good path towards solving your
issue. I agree that during transportation something has
been stirred up and now is blocking some passage.
Dieseltech who replied to your post operates and
injection pump repair business, he will not steer you
wrong. Should it come to the point of needing to
remove the pump for repair I would suggest contacting
him through his email to get a quote, he is relatively
inexpensive and does good work. Many here ship
pumps to him for repairs, he is in Indiana.

 

[Rick123]

(quoted from post at 15:49:35 11/11/23) A new fuel filter isn't going to get it started UNLESS you bleed the diesel fuel injection system of air. Do you have an Operator's Manual, that should give the bleeding procedure specific to your tractor. If NOT, hopefully someone with knowledge and experience with that exact machine will come along and post exactly what you need to do.

Or, did someone happen to shut to fuel off at the tank? (A more common thing to do with a gasoline-powered machine.)

I don't have a manual yet but have one on order. I'll google the procedure and see if it comes up. Thank you!

 

[Rick123]

(quoted from post at 09:06:53 11/12/23)

(quoted from post at 15:49:35 11/11/23) A new fuel filter isn't going to get it started UNLESS you bleed the diesel fuel injection system of air. Do you have an Operator's Manual, that should give the bleeding procedure specific to your tractor. If NOT, hopefully someone with knowledge and experience with that exact machine will come along and post exactly what you need to do.

Or, did someone happen to shut to fuel off at the tank? (A more common thing to do with a gasoline-powered machine.)

I don't have a manual yet but have one on order. I'll google the procedure and see if it comes up. Thank you!

Well I took off the air filter, cracked all injector nuts and cranked it over, then tightened injectors. It started up and ran for 15 to 20 minutes then died. This happens repeatedly. It starts to surge before dying and backfires at high rpm.

 

[Dieseltech]

Did you try running it with the pump two screw timing cover LOOSE yet like I mentioned before?

 

[Rick123]

(quoted from post at 15:32:07 11/12/23) Did you try running it with the pump two screw timing cover LOOSE yet like I mentioned before?

I haven't yet but will try tomorrow. I really appreciate your help!

 

[Rick123]

(quoted from post at 15:52:12 11/11/23) Try loosening the two screw timing cover on the pump side, if it runs OK WITH the fuel leak, but dies with the cover tight the injection pump needs repair. The retainer
ring is failing inside, and when the bits plug the RETURN line side the injection pump will shut down. Wait a bit, and it will start right up again, then die again. I
repair/calibrate a lot of pumps for this trouble.

What does it tupically cost to repair and calibrate a pumo?

 

[Dieseltech]

If the hydraulic head and cam ring are good, I can USUALLY repair/calibrate and return in the 350/450 range.

 

[Rick123]

(quoted from post at 17:54:54 11/12/23) If the hydraulic head and cam ring are good, I can USUALLY repair/calibrate and return in the 350/450 range.

Well it isn't the fuel pump. It must have been from the 4 hour drive knocking stuff loose. It seems to be running fine now for some reason. I'll keep running it every day until I feel comfortable that the problem is gone. Thank you for your help!

 

[buickanddeere]

Only 74% of the available air and compression Vs at
Sea Level .

https://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html#google_vignette