800 vapor lock

[DGK]

Bought this Ford and since warm weather finally got here the tractor runs for ten minutes then gas boils back up back in tank. Motor doesn't seem to be to hot. Blew Rad. out no change. Thanks for any help.

 

[jeff pk]

Do you have the heat shields installed?

 

[Jimmyjack]

Use non ethanol gas which has a higher boiling point and if necessary you may have to run the gas line around the front or back of the engine instead of behind the manifold.

 

[Anonymous-0]

Make sure the timing is correct. I had that problem on a 960 and I found I had to use premium gas. It has a higher boiling point.

 

[Dean]

Good advice below.

Verify correct ignition timing and proper operation of the centrifugal advance mechanism.

Verify that the heat shield is in place and not rusted out.

Above all else, avoid gasoline with ethanol if at all possible.

Dean

 

[Bikerjr1]

I have dealt with vapor lock two different ways back a long time ago with my first truck an all orginal 1955 F-100 with a straight 6 and factory Holly carb. The problem is heat on metal fuel lines. The man I bought it from was 80yrs old and told me to put a couple 2 or 3 wooden clothes pins on the fuel line. I thought he was crazy but at 16yrs old and Grandmaw still hung here wash out on the line I figured what the heck. IT WORKED! The clothes pins act as a heat sink for the line. I eventually replaced the line with a rubber line that solved it completely a couple of years later. You believe the looks you get when someone sees them on the fuel line, kinda like a dog that hears a funny noise.
JR

 

[JMOR]

(quoted from post at 12:55:04 05/11/14) I have dealt with vapor lock two different ways back a long time ago with my first truck an all orginal 1955 F-100 with a straight 6 and factory Holly carb. The problem is heat on metal fuel lines. The man I bought it from was 80yrs old and told me to put a couple 2 or 3 wooden clothes pins on the fuel line. I thought he was crazy but at 16yrs old and Grandmaw still hung here wash out on the line I figured what the heck. IT WORKED! The clothes pins act as a heat sink for the line. I eventually replaced the line with a rubber line that solved it completely a couple of years later. You believe the looks you get when someone sees them on the fuel line, kinda like a dog that hears a funny noise.
JR

id you also know that when it is raining AND the sun is shining, that the devil is beating his wife? :roll: