74 CJ5 Gas Cap!

[es335]

Having a heck of a time getting the correct gas cap. The PO removed the evap system. I have had the same gas cap for a year-came with the jeep. No rubber seal, spring loaded with what appeard to be a grass ring the pressed against the inner steel portion of the stock filer neck-worked perfect. Unfortunately, I lost it!!! Every gas cap I have tried -vented and non vented will not work. Jeep goes about 300 ft and stops dead-air locked. Remove or loosen the cap-runs fine. I ended up putting bends in the brass ring on the cap (preventing a seal) and it seems to work fine. However, I would rather have a new cap with a built in vent large enough to let the thing keep running. I have checked all of my local contacts. Any ideas? (Valve for the plugged fuel line that ued to go to the evap system?)

 

[Lumpy Grits]

Remove the rubber gasket on the cap and put a couple of bends in the 'skirt' that sits on the filler.
LG

 

[es335]

That is what I did-and it does work. However, would like to find a good quality gas cap-like the one I had

 

[Lumpy Grits]

Did you try NAPA?
Or Collins Bros?
Collins Brothers Jeeps and Jeep Parts

LG

 

[Torxhead]

I do recall on the '74 that the gas filler is mounted quite low. I used to run around with a guy who had a '74 with one of those breathable caps and when we would go wheeling I would have to keep my distance as the gas would flow out going up hills. I would suggest installing a charcoal canister and hooking it up with a sealed cap.

 

[es335]

Tried Napa and Collins brothers. Collins Bros stated they only go back to 76 CJs (?). May end up going the cannister route.

thanks for the replies!