Tank venting question ('04 650)
Just getting to know my new (to me) '04 Wee w/ 75K miles and need a little knowledge...
After a VERY brief run I heard gas cap hissing about a minute after shutting off bike. Today I changed the rear spark plug and it look fuel fouled (haven't gotten to the front plug yet). I'm wondering if my tank could be partially vacuum locking due to poor venting. Haven't noticed any engine stumbling.
Does the tank vent through the gas cap? I see a tube running from the bottom of the tank towards the ground. Is that an overflow tube, or a vent tube?
Not sure if air pressure was seeping out or sucking in.