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1964 ford 2000 vapor locking

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Paniclover

New User
Please help. My tractor starts vapor locking after 30 minutes on a cold start. I have changed the rubber fuel line some jack leg installed on it before I got it with the correct fuel line. Once tractor starts vapor locking i can let it cool 15-20 minutes and it will start right back up but starts vapor locking again in 15-20 minutes
 
(quoted from post at 16:41:26 09/26/16) Please help. My tractor starts vapor locking after 30 minutes on a cold start. I have changed the rubber fuel line some jack leg installed on it before I got it with the correct fuel line. Once tractor starts vapor locking i can let it cool 15-20 minutes and it will start right back up but starts vapor locking again in 15-20 minutes
Click to expand...
irst of all......you can not have "vapor lock" in a gravity feed system. By definition, vapor lock occurs when the pressure is reduced to the point that liquid turns to vapor & that pressure drop is a result of suction, the suction of a fuel pump. So now that we are past that, you may have a flow blockage due to boiling of fuel in the line or in the tank or both. Did it do the same with rubber hose as it does with metal line? Does the line touch manifold? This can be aggravated by dirt, partially clogged filters/screens, etc. Is flow out carb bowl drain, when cool, enough to fill a pint container in 2 minutes or less?
 
yes the tractor does the same thing as it did with the rubber hose. Yes the metal line is touching the manifold. can i bend it away from the manifold ? I can try the carb bowl
 
Tank heat shields in place?

Loosening the gas cap make any changes?

Definitely dont want line touching manifold.

I usually sacrifice a piece of brake line and make a run straight out around front and back over Gen to bowl.
 
I bought the fuel line from this website . This is my 1st tractor so I'm learning but I would think the fuel line I bought was bent to specifications . I also have the heat shield in place . I have not tried losing the gas cap . I did check to see if I had gas because it feels like the tractor is running out of gas . (I did still have fuel ) It tries to run and you can munipulate the choke and sometimes it helps and othertimes it seems not to help . The glass fuel bowl always stays full . I intend to bend the fuel line somewhat tomorrow to finish my food plots .
 
Back in the 50s some ford cars would do that. Might sound odd but old timers told us to wrap tin foil around the line. Don't know why but it did work on the old 50 ford. never had a problem after that.
 
My 1964 4000 gas did the same thing. Was the gas cap. I drilled a hole in the cap and all is well now.
I know at one point, Ford was offering free replacements....Not sure if that is still the case.

Good Tractor tho!

Tommy D.
 
(quoted from post at 15:55:16 09/26/16)
(quoted from post at 16:41:26 09/26/16) Please help. My tractor starts vapor locking after 30 minutes on a cold start. I have changed the rubber fuel line some jack leg installed on it before I got it with the correct fuel line. Once tractor starts vapor locking i can let it cool 15-20 minutes and it will start right back up but starts vapor locking again in 15-20 minutes
Click to expand...
irst of all......you can not have "vapor lock" in a gravity feed system. By definition, vapor lock occurs when the pressure is reduced to the point that liquid turns to vapor & that pressure drop is a result of suction, the suction of a fuel pump. So now that we are past that, you may have a flow blockage due to boiling of fuel in the line or in the tank or both. Did it do the same with rubber hose as it does with metal line? Does the line touch manifold? This can be aggravated by dirt, partially clogged filters/screens, etc. Is flow out carb bowl drain, when cool, enough to fill a pint container in 2 minutes or less?
Click to expand...

I would say that boiling gas into a vapor IS... vapor lock irregardless. Higher pressure fuel pumps eliminated the " boiling gas" problem along with careful routing of the fuel lines and location of fuel pumps. Moving fuel pumps lower and turning up the pressure pretty much eliminated vapor lock/ boiling gasoline problems in the 60s.... improvements in gasoline, and fan shrouds with fans no longer having 2 blades also helped.
 
"Gravity feed fuel systems are not immune to vapor lock. Much of the foregoing applies equally to a gravity feed system; if vapor forms in the fuel line, its lower density reduces the pressure developed by the weight of the fuel. This pressure is what normally moves fuel from the tank to the carburetor, so fuel supply will be disrupted until the vapor is removed, either by the remaining fuel pressure forcing it into the float bowl and out the vent or by allowing the vapor to cool and re-condense."

not my words.
 
(quoted from post at 17:51:03 09/27/16) "Gravity feed fuel systems are not immune to vapor lock. Much of the foregoing applies equally to a gravity feed system; if vapor forms in the fuel line, its lower density reduces the pressure developed by the weight of the fuel. This pressure is what normally moves fuel from the tank to the carburetor, so fuel supply will be disrupted until the vapor is removed, either by the remaining fuel pressure forcing it into the float bowl and out the vent or by allowing the vapor to cool and re-condense."

not my words.
Click to expand...
can see why you would not claim them! I wouldn't either.
 
I attempted to bend the fuel hose without removing it . Didn't work so well and I was pressed for time so I wrapped tin foil around the fuel line & over the muffler pipe . I also wedged a stick wrapped in tin foil between the fuel line and muffler pipe to get the fuel line off the muffler ..... ( I know that's jury rigging but I was limited on time today . I ran the tractor today for about 1 1/2 hours with no issue . I have one more food plot and my plans are to remove the fuel line and bend the fuel line accordingly and resinstall to see if the fuel line on the manifold and the muffler pipe was in deed the problem .
 
Pressure is pressure.

Look at a fluid filled tire.

the presence of both a gas and liquid in the tire don't mean that it won't build pressure.
 
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