fuel smell

Driving arround this morning, after filling the under-seat tank, I smelled fumes. Felt arround the filler neck and it's wet, seems to be seeping arround the new cap. It's a vented cap so is there anything that can be done about it or do just not fill it as much?

 

I get a whiff too if I park on an incline, filler down. I just try not to fill it up into the neck-

Eck

 

Mine has a leak...lol...I do not fill her full. New tank is next item on my list.

Leon 8)

 

This is a very common problem with ECJ's. Since the tanks aren't vented, the caps provide venting. Unfortunately what you get is a cap that doesn't seal. I try to put only about 5 gal at a time in mine, but I also have a rear tank that I run on.

 

I never fill mine up all the way!

 

Either don't fill 'em up all the way, or don't ever make a sharp right turn.

 

I like the smell of gas.

JB

 

Light a cigarette and the smoke & fire will hide the smell of gasoline! Just Kidding.


All of my past jeeps with the tank under the seat had this same problem. Just as the others did, I did not fill it all the way up.

Seems like I remember a posting where a guy made a homemade rubber vent hose that was attached near the end filler neck and the other end of the hose went under his jeep!

 

I'm not sure I would want my fuel tank vent to go under the Jeep.
Just wondering if you could get a non-vented cap and put in a hose from the fuel filler area that goes to the carb/air filter? Kinda like a shade tree evap setup? The tank would then be vented but the fumes would go into the carberator.
I usually think of this plan every time I fill the tank and get gassed. Or, trail ride on side hill. Or, make a sharp turn....

 

Jeez. They're '50's vehicles, well, a '40's design really. They all smelled back then. That's how you know if you have gas left if the gauge is kaput. With no emissions parts on 'em at all and a really basic carb you get that authentic vintage pollution stink. Too bad todays gas does not smell like the old stuff did. R)

 

Maybe we should burn racing fuel, it smells great!

 

A vapor recovery system would be easy to retrofit. I had an under-seat aux tank on my '73, and tried tying the filler neck vent into the vapor recovery. I found that the cap, even with the in-cap vent plugged, didn't seal well enough to divert vapors from the tank tothe recovery system. Basically I ended up venting the main tank into the aux tank, so I plugged the aux connection and went back to the vented cap.

 

I drilled into the filler neck, inside the body, and fitted a brass nipple. Sealed with liquid steel.

 

I used some gasket material and just double up on the gasket around the lid. Helped alot. I only leaked when parked on a side hill on the trail.