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Tractor Talk Discussion Forum

1965 Ford 4000 gas vapor lock

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shane louderbac

12-26-2006 12:17:54




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Has anyone every had issues with their Ford 4000 vapor locking? I can plow with my tractor for about 30 minutes and then all of sudden she starts to miss and sputters. You can see the air bubbles blowing down into the sediment bulb in the fuel. You can take the cap off the fuel tank and actually see the gas boiling a little from the heat off the engine. I have my heat shield in place, I took the thermostat out so the water runs completey through non-stop and my tempature doesn't get past 150. I wrapped the fuel line in tinfoil to help protect the line from the heat and I even put a piece of insulation board between the fuel tank and heat shield to help block heat. And last but not least I even mixed a little diesel fuel in with the gas to help make the gas a little thicker and that still didn't help. Would anyone have any ideas of what I else i could try? Thanks

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RustyFarmall

12-26-2006 12:28:28




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 Re: 1965 Ford 4000 gas vapor lock in reply to shane louderback, 12-26-2006 12:17:54  
Is the muffler still under the hood? If so, you need to relocate the muffler. Ford used to have a kit that replaced the muffler with a straight pipe, and then you installed a vertical muffler. This conversion kit was the answer to the boiling gas symptoms.



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shane louderback

12-27-2006 06:46:19




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 Re: 1965 Ford 4000 gas vapor lock in reply to RustyFarmall, 12-26-2006 12:28:28  
Thanks for the reply. Yes, I moved the muffler out to the vertical postion outside the tractor and the gas still boils. Beats me why i am still getting boiling gas.



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jhill52

12-26-2006 12:19:57




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 Re: 1965 Ford 4000 gas vapor lock in reply to shane louderback, 12-26-2006 12:17:54  
when my 3000 did that I had to change the fuel pump to fix it.

Jerry



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shane louderback

12-27-2006 06:47:57




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 Re: 1965 Ford 4000 gas vapor lock in reply to jhill52, 12-26-2006 12:19:57  
My 4000 doesn't have a fuel pump. It is gravity fed. Thanks for the reply.



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old Ford man

12-27-2006 10:52:21




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 Re: 1965 Ford 4000 gas vapor lock in reply to shane louderback, 12-27-2006 06:47:57  
If your 4000 is a 3 cyl. tractor it does have a fuel pump. The pump will have the plunger stuck in, which will let the fuel gravity feed, but there will always be a vapor locking problem. The pump is on the very front of the engine, mounted on the timing gear cover.



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shane louderback

12-27-2006 12:01:23




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 Re: 1965 Ford 4000 gas vapor lock in reply to old Ford man, 12-27-2006 10:52:21  
Thanks for the reply. I have the 4 cyl model.



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