Dieseltech , I have a question for you

Bruce from Can. · Mar 8, 2017

Or anyone else who can give me a answer. Buddy has a Ford 5000 tractor , ran fine one day , next day will start and idle just fine , but will not respond to throttle. All linkage seems to move fine . Could there be some quick easy fix ? Perhaps some spring or some thing very simple to do with the pump ? My friend is a auto mechanic , just not sure where to start looking to find problem , and may be a bit of advice in advance would save lot of fooling around . Bruce

Tx Jim · Mar 8, 2017

Check to be sure fuel return fitting at pump or return line isn't plugged.

Tx Jim · Mar 8, 2017

If 5000 has Simms inj pump has oil been checked/changed lately.

Dieseltech · Mar 8, 2017

Early Ford 5000 used the Simms inline pump, late models have the CAV DPA rotary pump. If inline, and cambox oil has not been serviced as it should, I'd suspect internal rust damage. Just repaired a P4666 pump for the same trouble, governor skate wheel carrier was stuck. If it's the DPA, could be simply fuel supply. What brand fuel filters? If NAPA/WIX are used MAKE SURE there's not an extra O ring in the top outer groove, that's the fuel inlet. Made lots of calls to correct that mistake. The O ring will slow down or stop flow completely when that filter top groove is blocked. Worth a look.

pete black · Mar 8, 2017

Great reminder, experienced the same.

JDEM · Mar 8, 2017

I have had to fix several 5000s that had the cam-box run out of oil. Pop the cover off and look inside. In-line pump is basically just four separate injector pumps riding on a camshaft in a box full of oil.

RodinNS · Mar 8, 2017

Does it roll coal when you give it throttle? If it does, pull the air filter and clean it. If it doesn't... you have a fuel problem. I had to clean the air cleaner mesh on my 66 5000 this summer. It was FULL of cluster flies.... so much so that the tractor could not attain high idle, never mind pull.

Fuel problems on the simms could also relate to a failed lift pump, or the previously mentioned problems with a dry cam box.... but as often as not that results in the pump rack sticking in one place... and a complete failure to start or a run away condition. If it starts and idles I'd be inclined to look elsewhere. IIRC, they used the Simms pump up until 12/74 on the 5000 before switching to the DPA rotary.
I'd also check the filters and tank outlet for proper flow before condemning either pump...

Rod

RodinNS · Mar 8, 2017

One more thought in case it hasn't been checked... if it's got a simms pump... make sure the throttle linkage hasn't fallen off the governor link on the back side of the pump. The retainer clips break sometimes.... it happens. If all is right you should see the throttle shaft on the outside of the pump rotate to it's idle stops.

Rod

Dieseltech , I have a question for you

Bruce from Can.

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Tx Jim

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Tx Jim

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Dieseltech

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pete black

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JDEM

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RodinNS

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RodinNS

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