I out of ideas on this one? I still am running out of gas ofter 30 min, of running
and from the tank to the carb is all new . I now it doesn't make any since. HELP?
The tank is vented,
New sending unit,
New 3/8 fuel line,
New fuel pump,
New filter,
New carb,
What's Left?
Yes and it doesn't make a difference . I even tried from a gas can. so far the only time it has not stalled out of gas is with a 1/2 inch line from the gas can to pump then to the carb.
What engine? cold someone have left the eccentric for the fuel pump off the front of the cam?
Check the suction side of the fuel pump for vacuum while cranking the engine.
I even ran a new Temporary clear flex line from a gas can to the pump and it still looses fuel pressure, just like you would shut off your fuel pump. I've been around cars my hole life and have never seen anything like this ?
Are you using an electric pump or mechanical. In you original thread it seemed like you tried both. If it is electric have you checked for power and ground at the pump when it dies.
How do you get it restarted, does it just restart after it sits for a while and after you get it restarted does it run for another 30 minutes.
Have you actually checked for fuel in the carb when it dies.
Yes it does have very litle gas in the bottom of the carb. Right now I think I might be boiling my gas in the carb.
My new spacer plate aluminum and only a half inch thick so I ordered a 1 inch plastic . All this time I thought it was
loosen pressure and I think it is vapor locked ?
It's not going to boil off while it is running?What kind of filter do you have in the carburator itself some are 1 way.Take it out if there is one there and try it again.
You never said whether the fuel pump is electric or mechanical that I could ever find in your posting. If electric, they don't like to "suck", they like to "push". If they have to suck too hard, they will cavitate internally, essentially going into "vapor lock" internally, and will quit pumping. If electric, right after the engine quits, feel the pump. If it's hot, that's your problem. I know, I mounted my electric pump on the inside of the fender well, above the tank and toooo far from the source of fuel. My bad *** 383 would only run for about 5 or 6 minutes, then die every time I started it. Carb bowls going dry. Then one day I felt the pump, and it was reeeal hot. Tossed the electric, went back to mechanical - problem solved.
I had a situation like this a long time ago.
I believe it was a Pinto that would drive a couple of minutes about and then quit. No fuel in the carb.
Replace all of the normal fuel related stuff no fix.
Ran the car on a chassis dyno for an hour, never failed. Backed car off of dyno and quit leaving the parking lot.
Had a buddy that ran a tow truck service tell me that the sock filter on the end of the pickup line in the tank can get plugged up.
Removed the fuel cap, put an air hose to the fuel line past the filter and gave it a couple of quick blast of air.
Problem solved.
Not saying this is your problem.
Just had one similar to yours.
Hope you get it fixed.
Not sure what tank you have or what it is in. I chased a fuel issue for month before finding a check valve in the tank pickup tube. My car is a 46 Ford with a steel reproduction tank and pickup.
Me thinks oldbogie hitting it pretty close. Where is that fuel line running? If it gets hot enough to boil the gas before it gets to carb, it puts a back pressure on the line and cancels the pump (cavitation). I think gasoline boils at around 150 deg., but am not sure.
I guess we lost him..... he never said whether it was mechanical or electric.... oh well.. guess he solved it.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Hot Rod Forum
2.2M posts
175.6K members
Since 2001
A forum community dedicated to hot rod owners and enthusiasts. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!