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Ford Tractors Discussion Forum
Show Parts for Model:

Re: 7700 fuel problem

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Shaun Wallace

10-29-2012 18:06:42
184.79.84.3



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Iirc there is no strainer on end of pickup tube. Just open ended. The fuel is pulled from top of tank. Fuel sender,suction tube,fill from upper tank in one assembly. I would check fuel pump for trash under round cover held on with one bolt in center.




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Bern

10-29-2012 18:21:09
66.218.203.131



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 Re: 7700 fuel problem in reply to Shaun Wallace, 10-29-2012 18:06:42  
From the factory, there is most definitely a screen on the pickup tube. If the last one you worked on did not have one, it was either pulled off, or it more likely fell off and is rattling around in the bottom tank.

The pickup tube HAS to go the bottom of the bottom tank, or else the tractor would run out of fuel when it's half full. The top tank only has a fill and vent line, that's it.

Best way to check for a plugged strainer is as follows: Fill both fuel tanks full. Pull off the line at the bottom of the lift pump. Fuel should flow freely in a nice stream. Anything other than a stream will require removing and cleaning the pickup tube strainer screen.

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jk dairy

10-30-2012 07:04:10
70.194.7.29



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 Re: 7700 fuel problem in reply to Bern, 10-29-2012 18:21:09  
I think it's getting fuel,it flows out like you said it should and it blows black smoke,and seems to fire. Now it won't even start, when it would start it would die right away, like it ran out of fuel. I can't figure out what could be the problem, maybe a bad gasket when I changed the fuel filter? I'm stumped! Anyone have any other ideas to try?



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jk dairy

10-30-2012 15:59:03
70.199.103.160



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 Re: 7700 fuel problem in reply to jk dairy, 10-30-2012 07:04:10  
I decided to change the fuel filter again and then she started right up and runs fine! Why, I have no idea, bad filter and or gaskets maybe? Any ideas? I guess it doesn't really mattter, she's running good now!



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Bern

10-30-2012 16:18:16
66.218.203.131



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 Re: 7700 fuel problem in reply to jk dairy, 10-30-2012 15:59:03  
I've seen where gaskets were doubled up and the smaller one was installed along with a larger one, blocking fuel flow through the filter. This may be what happened.



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