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1964 4000 diesel runs 3-5 minutes and dies

H

hadcase

New User
I have read most of the post on this, but this one is a little different. Just like the majority of the post starts and runs for the 3-5 minutes and then dies, but if you crack a injector it will pick back up and keep running for maybe 10-15 minutes. Have checked all the fuel lines and return line all ok. Have even hooked up a different fuel tank and same thing. Plus this fuel pump only has 100 hours on it. Any help would be great.
THANKS hardcase
 
I sometimes miss the most obvious things looking for whats not there. As a start I had several questions. Have you changed the fuel filters and bled the air out of the top of them? Is the fuel shut off, turned off? Does this tractor have a gravity flow fuel feed system? My 4500 does. There is a screen on the fuel intake above the cutoff valve, in the tank. If you disconnect the fuel line at the injector pump do you get good flow with the engine off? Is there a filter in the banjo fitting at the pump? Does the engine sound like it is starving for fuel before it dies? Does it sound like an air in system problem or a lack of fuel problem?

I changed the fuel filters on mine yesterday and even after bleeding air at the injector pump and the filter manifold I still needed to crack an injector line to get it to catch again. It is gravity feed to the injector pump so it can"t be a faulty fuel pump.

I hope there is something here that rings a bell. I hope what ever it is entails only a simple fix.
John
 
Are you sure the fuel is getting OUT of the pump as it needs too? Sounds to me like a typical failed weight-retainer ring inside the pump that has plugged up the return circuit, and forcing the pump to shut down.

Did you try running with all exit-fuel fittings removed from the pump? When you say the "fuel pump" only has 100 hours", what exactly does that mean? If you are referring to the Stanadyne fuel-injection pump, what exactly was done to it 100 hours ago? And, regardless of engine hours, how LONG ago was it done?
 
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