The Ford Barn

bsky59 · 11-03-2014, 12:36 PM

is it normal for gas to drain back out of a in line fuel filter,seems like it
takes a long time to gas back to the carb if i have not run the car for a while.
also i know a guy selling a 58 ford rag top with a continetal in the pittsburgh area
if anyone is interested,black with white top.

ponymare · 11-03-2014, 01:53 PM

If there was a small hole, or loose line between the filter and supply pump, yes. Also it could be the carb is leaking the fuel into the manifold while sitting.

Daves55Sedan · 11-03-2014, 04:28 PM

It drains out of my inline filter and there are no fuel line leaks anywhere. New or old filter. New or old fuel pump. Always did that but only after setting for a few days without starting engine. I don't really care though, because my car runs daily unless I am doing a repair job that lasts more than 4 days. That is very rare.

JeffB2 · 11-03-2014, 06:03 PM

It's caused by the way they are vented a very common problem with old Fords,the most common cure is to mount an electric pump back by the tank as a pusher.

dmsfrr · 11-03-2014, 10:04 PM

My first thought...
When a car sits the gasoline will evaporate out of the fuel bowl of the carb. (bowl vents, & residual engine heat) As the float level drops the needle valve will open, letting air into the top of the fuel line. If the check valves in the fuel pump don't seal perfectly this allows the fuel line to gravity drain back into the fuel tank because the top of the engine and fuel filter are higher than the tank.
A fiber or phenolic plastic heat spacer between the manifold & carb may delay how soon it happens.
I'm guessing an aluminum spacer probably transfers more engine heat into the carb than a fiber or phenolic one.
Yes, an elect fuel pump wired to the ignition can refill the filter and carb before you crank the engine over.

bobss396 · 11-04-2014, 09:21 AM

Sponsored Links (Register now to hide all advertisements)

I run my fuel filters (old Holley canister type) down on the frame rail. I don't like filters running over a hot engine. So far on any car I've had, it starts right up. I also like to use phenolic spacers to insulate the carb from heat. Even with the car off, the engine heat can accelerate fuel evaporation in the fuel bowl.

11-03-2014, 12:36 PM	#1
bsky59 Junior Member Join Date: Sep 2014 Location: Carnegie,Pa. Posts: 19	59 ford gas is it normal for gas to drain back out of a in line fuel filter,seems like it takes a long time to gas back to the carb if i have not run the car for a while. also i know a guy selling a 58 ford rag top with a continetal in the pittsburgh area if anyone is interested,black with white top.

11-03-2014, 01:53 PM	#2
ponymare Senior Member Join Date: Sep 2014 Posts: 160	Re: 59 ford gas If there was a small hole, or loose line between the filter and supply pump, yes. Also it could be the carb is leaking the fuel into the manifold while sitting.

11-03-2014, 04:28 PM	#3
Daves55Sedan Senior Member Join Date: May 2010 Location: Granite City, Illinois Posts: 3,008	Re: 59 ford gas It drains out of my inline filter and there are no fuel line leaks anywhere. New or old filter. New or old fuel pump. Always did that but only after setting for a few days without starting engine. I don't really care though, because my car runs daily unless I am doing a repair job that lasts more than 4 days. That is very rare.

11-03-2014, 06:03 PM	#4
JeffB2 Senior Member Join Date: May 2010 Location: Phoenix,AZ Posts: 1,417	Re: 59 ford gas It's caused by the way they are vented a very common problem with old Fords,the most common cure is to mount an electric pump back by the tank as a pusher.

11-03-2014, 10:04 PM	#5
dmsfrr Senior Member Join Date: Aug 2012 Location: Abq, NM Posts: 3,607	Re: 59 ford gas My first thought... When a car sits the gasoline will evaporate out of the fuel bowl of the carb. (bowl vents, & residual engine heat) As the float level drops the needle valve will open, letting air into the top of the fuel line. If the check valves in the fuel pump don't seal perfectly this allows the fuel line to gravity drain back into the fuel tank because the top of the engine and fuel filter are higher than the tank. A fiber or phenolic plastic heat spacer between the manifold & carb may delay how soon it happens. I'm guessing an aluminum spacer probably transfers more engine heat into the carb than a fiber or phenolic one. Yes, an elect fuel pump wired to the ignition can refill the filter and carb before you crank the engine over. Last edited by dmsfrr; 11-04-2014 at 02:45 PM.

11-04-2014, 09:21 AM	#6
bobss396 Senior Member Join Date: Aug 2014 Posts: 721	Re: 59 ford gas Sponsored Links (Register now to hide all advertisements) I run my fuel filters (old Holley canister type) down on the frame rail. I don't like filters running over a hot engine. So far on any car I've had, it starts right up. I also like to use phenolic spacers to insulate the carb from heat. Even with the car off, the engine heat can accelerate fuel evaporation in the fuel bowl.