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Ford LCG 2000 1963 Vapor lock

A

Anonymous-0

Well-known Member
What is the solution?
Could it be something else?
It has been in the 90's and humid, etc.
Seems like it did this years ago--Is it CONNECTED TO THE NEW 10% ETHANOL?
 
Vapor lock occurs on the suction side of the fuel pump, so you need to verify that there is no restriction to fuel flow between the tank and the fuel pump inlet, for starters.
 
Erza:

Vapor lock is often blamed for a plethora of problems with vintage tractors but it is rarely an issue.

Whatever problems you are having with your 1963, 4 cylinder 2000 LCG are not the result of vapor lock.

Dean
 
Plethora is the word--(been out trying to find out why my Ferris is acting up) I better still see if fuel is getting to the cylinders!
Clean carb? Stuck float?
 
I'm experiencing the same thing and I'm not sure it's vapor lock. The galvanized material inside of my jubilee's tank is flaking off, so I installed a 1/4 in line fuel filter just before the carb. Thought I was experiencing vapor lock, so I installed a heat sheild and no luck. Next, I installed a plastic lawn mower filter that I could see the fuel going through it. After a short time of running, the filter filled with air. Removed the filter from the gas line and fuel came out the gas line. Decided to get a foot of rubber gas line and install the filter vertically, thinking the air would go up to the tank and the filter would fill up with gas. NO LUCK. The air inside the fuel filter would not go up the 1/4 inch steel gas line. It was like it was vapor locked without a source of heat. The only way I could bleed the air from the filter was to remove the hose on the top side of the filter and let the air out and gas in. I'm thinking the problem may be solved by installing a larger diameter fuel line that will allow air to go up the tank. It's like taking a drinking straw and filling it with a liquid and placing you finger over the top of the straw. Air doesn't go up the straw and the liquid won't come out the straw. Try doing that with a larger straw or pipe and air will go up and drain the straw.
 
(quoted from post at 18:21:33 08/08/10) I'm experiencing the same thing and I'm not sure it's vapor lock. The galvanized material inside of my jubilee's tank is flaking off, so I installed a 1/4 in line fuel filter just before the carb. Thought I was experiencing vapor lock, so I installed a heat sheild and no luck. Next, I installed a plastic lawn mower filter that I could see the fuel going through it. After a short time of running, the filter filled with air. Removed the filter from the gas line and fuel came out the gas line. Decided to get a foot of rubber gas line and install the filter vertically, thinking the air would go up to the tank and the filter would fill up with gas. NO LUCK. The air inside the fuel filter would not go up the 1/4 inch steel gas line. It was like it was vapor locked without a source of heat. The only way I could bleed the air from the filter was to remove the hose on the top side of the filter and let the air out and gas in. I'm thinking the problem may be solved by installing a larger diameter fuel line that will allow air to go up the tank. It's like taking a drinking straw and filling it with a liquid and placing you finger over the top of the straw. Air doesn't go up the straw and the liquid won't come out the straw. Try doing that with a larger straw or pipe and air will go up and drain the straw.
Click to expand...
eorge, there is a "major" difference in your straw analogy & the fuel system on the tractor............that is that no one has their finger covering the outlet hole of the gas tank. That air bubble in your filter isn't bothering anything/anyone but you...... the fuel passes right on past the bubble to the carb. You need not believe me, just remove the plug from the bottom of your carb float bowl & watch it flow until the total contents of the tank drains through the line, filter, carb and into a bucket or onto the ground.
 
I did exactly that, removed the plug in the bowl of the carb and NO GAS!! Tractor stops just like it ran out of gas. Sorry I posted what I've discovered, just thought it might be helpful to some.
 
(quoted from post at 20:48:57 08/08/10) I did exactly that, removed the plug in the bowl of the carb and NO GAS!! Tractor stops just like it ran out of gas. Sorry I posted what I've discovered, just thought it might be helpful to some.
Click to expand...
y all means, don't express sorrow.........post whatever you observe. There is an explanation somewhere, maybe your post will bust it lose. What if you disconnect between the carb and the filter? Any flow now? My air compressor, welder, and mower have run with that filter horizontal, air bubble and all, for many years & different filters with perfectly flowing gas & operation, so I know that air in that filter will not stop gas flow. Trash can and a small amount of water can block them, too.
 
No gas comes out when I remove the filter from the carb. Used 2 new filters! No water! No trash! Have plenty of gas when I remove the filter from the gas line. With the see through filter I can see what is happening. It's like the wet paper inside the filter and the air blocks the fuel flow. Gee wez, think that may be a form of vapor lock? Explain why doesn't the air go up the pipe to the tank? Have a new tank but haven't had time to install it. Going to use rubber gas line with 1/4 inch ID on new tank and will bet you problem goes away. WANTA BET JMOR?
 
(quoted from post at 06:37:00 08/09/10) No gas comes out when I remove the filter from the carb. Used 2 new filters! No water! No trash! Have plenty of gas when I remove the filter from the gas line. With the see through filter I can see what is happening. It's like the wet paper inside the filter and the air blocks the fuel flow. Gee wez, think that may be a form of vapor lock? Explain why doesn't the air go up the pipe to the tank? Have a new tank but haven't had time to install it. Going to use rubber gas line with 1/4 inch ID on new tank and will bet you problem goes away. WANTA BET JMOR?
Click to expand...
o betting, George. In/Out not reversed?
 
(quoted from post at 12:29:59 08/09/10) Are U trying to say that betting in not allowed? If so, I wasn't aware of that.
Click to expand...
llowed? Nope, just I not taking your bet. :)
 
JMOR, I may have to eat some of my words...my problem seems to be temperature related too. When the temp of the fuel filter reaches 115 the fuel stopped flowing. If you doubt me, I have a pic of the bolt removed from the carb and no gas is was coming out in buckets full. From the pic it is difficult to see the plastic filter was empty, however I can tell the fuel stopped flowing into the filter. I even removed the gas cap thinking their may be a problem there, it wasn't. When the filter cooled down to 95 the fuel began flowing on its own. Going to Napa tomorrow and buy 4 ft of rubber hose. Plan to run the gas line behind the battery. When I replace the tank, after I run the old tank out of gas, I'm going to make a heat sheild that goes between the tank and the engine. My tank temp was running 110 about the same as the carb temp. BTY, I was using an IR therometer to measure temps with and the outside temp was 94. I would like to know why the fuel didn't begin flowing when I removed the bolt from the carb? It took a good 10 minutes for things to cool down and the filter filled 99% on its own. This problem seems to show up faster when the tractor is running at 700 RPM's. I think the fan doesn't blow the heat away fast enough and things heat up quicker. I also made heat sheilds for the filter and lines, no luck either. What kind of odd do you give me on fixing the problem with a rubber hose and a different path for the fuel line? Wanta bet?? :) Bragging rights?
 
(quoted from post at 15:09:38 08/09/10) JMOR, I may have to eat some of my words...my problem seems to be temperature related too. When the temp of the fuel filter reaches 115 the fuel stopped flowing. If you doubt me, I have a pic of the bolt removed from the carb and no gas is was coming out in buckets full. From the pic it is difficult to see the plastic filter was empty, however I can tell the fuel stopped flowing into the filter. I even removed the gas cap thinking their may be a problem there, it wasn't. When the filter cooled down to 95 the fuel began flowing on its own. Going to Napa tomorrow and buy 4 ft of rubber hose. Plan to run the gas line behind the battery. When I replace the tank, after I run the old tank out of gas, I'm going to make a heat sheild that goes between the tank and the engine. My tank temp was running 110 about the same as the carb temp. BTY, I was using an IR therometer to measure temps with and the outside temp was 94. I would like to know why the fuel didn't begin flowing when I removed the bolt from the carb? It took a good 10 minutes for things to cool down and the filter filled 99% on its own. This problem seems to show up faster when the tractor is running at 700 RPM's. I think the fan doesn't blow the heat away fast enough and things heat up quicker. I also made heat sheilds for the filter and lines, no luck either. What kind of odd do you give me on fixing the problem with a rubber hose and a different path for the fuel line? Wanta bet?? :) Bragging rights?
Click to expand...
eorge, I see the re-routing as having possibilities. If the gasoline is actually boiling in the tank and/or line, then such a percolating state could (guess/opinion) interfere with the liquid flow downward....against the flow of percolating bubbles.
 
Have plenty of gas when I remove the filter from the gas line.
Click to expand...

So if you have flow after removing the filter, clean and/or replace the screen in the sediment bowl and get rid of the filter
 
36F30, Congrats to you! I replaced my flaking gas tank, sed. bowl, used a rubber gas line and removed fuel filter. Seems to be working, however it is only 87 instead of 97. See what happens when it gets hotter.

JMOR, you should have bet. Size doesn't matter:) When I went to a rubber gas line, 1/4 ID, I still have a vapor lock in the see through filter.
 
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