750 Massey fuel problems

super99 · Oct 5, 2008

Got started cutting beans today. I got about 2/3's of a hopper cut, and the motor died like it ran out of diesel fuel. I tried to bleed the pump, and was getting air. I could hear it sucking air when I pumped the lift pump. So I came to the house and took the lift(primary) pump off of one of the 1850's, and went back out and put it on and bleed the lines and it started and ran good. I cut about 2 more rounds, it's dark now, and it did the same thing. Tried to bleed the injection pump, left the 5/16 wrench in the pickup. Walked 1/8 mile back to pickup and got wrench and back to combine. The head of the bleed screw rounded off, so I couldn't check it for air. Came home and got a tarp and put it on the grain tank and dig into it deeper tomorrow. I guess I'll buy another primary pump and put it on and try it again. I ain't havin fun yet. Chris

the tractor vet · Oct 5, 2008

Ran into the ssame problem with one i sold to a buddy . I found that the fuel strainer that is attached to the sediment bowl on the bottom of the fuel tank was coated with old bean dust as was the bottom three inches of the inside of the fuel tank . The main fuel pump would start sucking air around the sediment bowl gskt . and it would also suck air around the fuel filter. I dropped the sediment bowl and drained all the fuel and took a high pressure hot water washer to the tank and it took a while to blast all that junk out . After that we had no more b problems . This also happened to my old 410 gasser bean dust in the bottom of the fuel tank pluggen the sediment bowl screen.. Had to clean that one again this summer before barley. Hope this helps ya out.

Anonymous-0 · Oct 5, 2008

Check where the fuel line goes under the radiator.Mice like to eat holes in the line & you will not see anf fuel there.Blow in the tank & you might find a leak in the line.Good luck.

flying belgian · Oct 5, 2008

I changed the fuel filters on my 750 and it would not start for anything. tighten the hell out of those filters and problem solved.

super99 · Oct 6, 2008

Thanks for the input. I just had the sediment bowl out and the screen on it that sticks up into the tank was covered with black crap, when I cleaned it off, it had a couple of holes in it, so I replaced it. Now I think I will see if it's getting any fuel at all. Will let you know what happens. Thanks again, Chris

Bob · Oct 6, 2008

Our 760 couldn't suck fuel due to a hole worn in the fuel line by one of it's mounting clips somewhere more or less under the grain tank.

Cummins 1955 · Oct 6, 2008

We fought the problem about a year until we installed an electric fuel pump at the tank. Solved the problem. Much easier bleeding filters too. We noticed it ran better with a full tank than empty. If there was a hole in the line it will leak under pressure an help in finding it. We later had to replace one hose due to a mouse hole and used hydraulic line to prevent it from happening again.

trucker40 · Oct 6, 2008

I dont know about that diesel motor but a lot of times a diesel will suck air around a filter gasket or a line can crack or a fitting can vibrate loose.Sometimes just tightening the fittings will help,but that electric fuel pump sounds like a good idea.You could plumb it in to where it just sets there until you need to use it maybe,put a toggle switch on it and if it starts acting up flip the toggle switch on,at least until you figure it out,might just keep the electric pump on it,sure would beat a hand pump if you ran out of fuel.

750 Massey fuel problems

super99

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the tractor vet

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Anonymous-0

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flying belgian

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super99

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Bob

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Cummins 1955

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trucker40

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