Is the visibly low fuel level and bubble(s) in the pictures caused by vapor lock?
I have a new, occasional, issue that I think I ve finally found the cause of.
I have a 1957 Ford 640, 12V conversion, that starts and runs just fine for a while. Around the 15-20 minute mark, it will sometimes -sometimes- stumble and slowly die. When I engage the clutch, it will sometimes catch and start running just fine. Other times, when it dies, it will immediately start right back up and run just fine for the rest of the time I m doing chores around another 20 or so minutes.
Then there are times where it won t start again for 5-10 minutes, and then it seems to run fine.
I recently replaced the carburetor (all of this in an effort to address this problem), pulled and cleaned the fuel tank, replaced the fuel shut off valve and the associated filter screen that is up in the fuel tank, blew out the fuel line, which didn t appear to be restricted in any way, and I replaced the sediment bowl.
I also converted the tractor to a 12V system, and installed an electronic ignition. I know it s not the fuel cap on the tank, as I have the original that came when I bought the tractor and a new one that makes a poor seal as it allows fuel to spill on bumpy rides with a full tank.
Today I noticed the gap where the fuel is sitting in the bowl lower than the top.
Is this some sort of vapor lock? Has anyone seen this before, and more importantly, fixed it?
It doesn t seem to happen an more or less with temperature or weather. I am beginning to wonder if it might not happen more often when the tank is half full or less. Less fuel to assist the gravity feed of the fuel to the sediment bowl?
Any help would be appreciated.
-Raxx
P.S.: A couple of pics of the fuel line, in case that helps?
[/img]
I have a new, occasional, issue that I think I ve finally found the cause of.
I have a 1957 Ford 640, 12V conversion, that starts and runs just fine for a while. Around the 15-20 minute mark, it will sometimes -sometimes- stumble and slowly die. When I engage the clutch, it will sometimes catch and start running just fine. Other times, when it dies, it will immediately start right back up and run just fine for the rest of the time I m doing chores around another 20 or so minutes.
Then there are times where it won t start again for 5-10 minutes, and then it seems to run fine.
I recently replaced the carburetor (all of this in an effort to address this problem), pulled and cleaned the fuel tank, replaced the fuel shut off valve and the associated filter screen that is up in the fuel tank, blew out the fuel line, which didn t appear to be restricted in any way, and I replaced the sediment bowl.
I also converted the tractor to a 12V system, and installed an electronic ignition. I know it s not the fuel cap on the tank, as I have the original that came when I bought the tractor and a new one that makes a poor seal as it allows fuel to spill on bumpy rides with a full tank.
Today I noticed the gap where the fuel is sitting in the bowl lower than the top.
Is this some sort of vapor lock? Has anyone seen this before, and more importantly, fixed it?
It doesn t seem to happen an more or less with temperature or weather. I am beginning to wonder if it might not happen more often when the tank is half full or less. Less fuel to assist the gravity feed of the fuel to the sediment bowl?
Any help would be appreciated.
-Raxx
P.S.: A couple of pics of the fuel line, in case that helps?
[/img]