Fuel cap not venting...how to fix?

[Big G]

I've diagnosed a stalling problem on my 250ES as being the fuel cap not venting (of all things!). This isn't an aftermarket cap - same OEM one as found on practically every other HONDA ATC manufactured in the 80's. Has anyone ever had a problem with these fuel caps not venting? If so, is there a fix???

[Big G]

Sorry, forgot to mention too, yes the cap vent is set to "ON".

[250rRoostmaster]

They get filled with rust usually which clogs them up. Somewhat common in bikes that have sat for long periods. Never tried cleaning them because new ones are pretty cheap.

[Ghostv2]

I've seen people just drill a small hole through them but I wouldn't recommend It. Maybe soak in apple cider vinegar like we do to remove the rust out of the tanks.

NOS is about $50 and there are used ones for $20 on eBay.

[Hurley250R]

There are videos on Youtube showing how to take them apart and clean them.

[Big G]

There are videos on Youtube showing how to take them apart and clean them.

Thanks Hurley, you're right, there are a couple good videos which pretty much shows the issue. Looks like these caps do come apart and can be refurbished after all!

[Ghostv2]

Well I learned something new also. Here's a link to disassembly and parts for future people with the same problem.
https://youtu.be/Ljc5H1ZB7vM

[Dirty200]

1/8 drill bit is about 3 bucks.