Correct Gas Cap? Too much pressure!

[demian5]

Originally Posted by jeffahart

My 10623 cap vents and breaths.

I bought one of those too and still not right...

Ill drill a hole in the only one I have that doesn't leak all over the side of the truck and hold too much pressure.

[webfoot]

I have also run non-ethanol premium in my old rides and the pressure builds up so much in these "vented" caps it swells the tank up. I went to fuel up on a hot day once on a long trip and the cap blew out of my hands and filled my face full of gas vapors.

Rubber these days is absolute garbage. My shift boots I installed a few years ago are already cracking. I see why NOS parts are so popular, cuz they are worth it. I put a new fuel neck grommet on my tank filler and that thing was so dry rotted in 1 year it basically crumbled off. Why are resellers carrying this crap?

End of rant.

[jeffahart]

Originally Posted by demian5

I bought one of those too and still not right...

Ill drill a hole in the only one I have that doesn't leak all over the side of the truck and hold too much pressure.

Interesting, your the second one who now said the Stant 10623 doesn't vent. I must have gotten a one off or something. I will test another because I'm curious. I will probably end up venting my tank in the future anyway, but the gas cap thing is making me curious.

I agree on the leaking rubber. Seems like the gas caps have to be treated as a perishable these days and replaced every couple years.

Good luck, the mod is pretty simple too though.


j