Gas cap should be vented, right?

[cobraguy]

My gas tank is building pressure on my 81 gl1100. This is causing some drivanility issues and gas leaking from the petcock. If I relieve the pressure by opening the cap the problems go away. I think the cap is supposed to be vented and mine is plugged. Can somebody confirm this and maybe a remedy, I'd be most appreciative.

[MSGT-R]

Yes, the cap is internally vented. If your's is plugged, you can either order another from Honda Direct Line Parts, or you can drill a small hole through the top (I did that when mine plugged on a road trip).

[guitarlos]

I soaked mine , actually submerged it in Seafoam for 24 + hours and it worked fine afterwards.

[MSGT-R]

I love a success story!