Gas splashing out of filler neck while driving

[runmikeyrun]

Hi everyone. Stupid question.

1942 ford truck, gas splashes out of the filler neck when driving, pretty much only when I take a left turn or the right side of the truck dips lower than the left.

I did add an extra layer of gasket material on the cap which cut the spillage way back, but I still get a little bit coming out. Will a new cap solve this issue? It has an original style non-vented cap, which could even be the original (who knows).

I keep the tank no more than half full.

Otherwise wondering if anyone makes a device to put into the filler neck like modern cars have with a steel trap door.

Thanks in advance.


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[philipswanson]

Try a new cap.

[johndee138]

I had that problem with my 36 and found a plastic piece that had the flipper door in it that is the size of an unleaded spout. I had to whittle the piece down to fit into the neck and bent some heavy stainless wire/rod to make a sort of spring to hold it inside the neck. It has helped a lot and could prolly be sealed a bit better to essentially stop the splashout.
A good sealing cap is also worth getting

[Brian]

I fitted one of those 'trapdoors' out of a jap car into my filler neck...considerably cuts down on the spillage

[johndee138]

Exactly^

[Ross F-1]

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How is the gas tank vented, if the cap isn't? I'm not familiar with the earlier trucks, but 48-on are all vented.

Those of you who added the flipper-door, do you know what vehicles they came out of?

[Brian]

Those of you who added the flipper-door, do you know what vehicles they came out of?



Dunno...I've done this several times in old Fords, I just go to a wrecking yard and check out various Jap cars until I find one that'll work. Buy the filler neck, take it home, remove the trapdoor- requires minor surgery lol, and fit into the Fords filler neck.

[rich b]

Here something I saved from a while back

[runmikeyrun]

Yes that’s perfect!


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[Ross F-1]

Thanks, guys!

[redmodelt]

Don't over fill the tank, leave some room esp in the heat when gas expands. Other thing, lots of roads have high crowns, I have run into the gas coming out if the truck sits at to much of an angle, with the filler side on the low side with a full tank.

[TomT/Williamsburg]

Originally Posted by rich b

Here something I saved from a while back

This is from HamtownAl in Virginia .....

[Newc]

Hi fellows; Just a note; 40 yrs ago I had a serious Motorcycle crash due to a gas spill on a corner.. looked like water... acted like ice. I quit riding forever, couldn't trust the road. Newc

[tubman]

I understand completely. I was a little luckier. About 8 years ago, I got my bike out of winter storage, changed the oil, installed the battery and got it going. One trip around the parking lot, and a little voice in my head said, "Nope, not no more". I sold the bike the next day and haven't looked back.

I hope you suffered no permanent injury.

[runmikeyrun]

Interestingly, I’ve been a vintage bike guy since I was 15, so almost 30 years now. This truck is my first real hands on at vintage cars, although I was a factory trained Chevy mechanic for a few years. Being a paramedic was easier so I switched to that and never looked back haha.


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[swanwaco32]

Tanks makes a fuel cap that has a vent with a ball in it to prevent the gas from coming out. I have one on my 32. It looks like a stock cap. Also has a rubber seal instead of paper.

[rich b]

Originally Posted by TomT/Williamsburg

This is from HamtownAl in Virginia .....

That's neat; a Ford Barn guy's magazine article from the past resurrected to help with a new thread on the Barn.