Motorcycle Fuel Tank Breather Vent and EVAP Info | ft. Kawasaki Versys  

yupper

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Ohh sorry - hope tank now cleaned. I'm glad you found the video useful. 😀👍

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Haha, I know many bike face issue because of Evap 😀, though it's installed for a good reason.

I'm sure the breather hole would be in all vehicles fuel tank (to avoid vaccum in tank, & allow free flow it fuel). However EVAP is relatively newer concept since few years, mostly to regulate pollution and comply to emissions norms. BTW, good to know of '87 steed. 👍

Designs & implementation vary in different motorcycles. The water from drain hole will not go to EVAP to avoid clogging. The breather hole will take the fuel vapours to EVAP canister and air to the tank. While you could see only one hole at top area of fuel lid, internally the lines would be seperated typically using a solenoid valve, to get the fuel / vapour / air / water across different areas, avoid mixing water n fuel. In general fuel vapours do goes to EVAP canister (if deployed), and water drains out on thr ground directly. 👍

Mere bhai wo water ya fuel overflow hole hai 😂 So that access fuel or rain water doesn’t get into the fuel tank🤦🏻‍♂️

As I explained, especially in bigger bikes there is EVAP canister to control strict emission norms. Fuel should not overflow on ground, cases pollution. So the overflow water or fuel is seperated down and only fuel (and fuel vapours) are passed to EVAP canister, and further to intake manifold during ignition period. Else normally valve is closed to hold fuel at canister level. However on small bikes, there is no EVAP system, so that top hole works for overflow of water (rain / washing water) and fuel overfull, both elements directly dropping on ground (in turn causing ground pollution, but that's neglected !!). Typical commuter bikes don't have EVAP, but superbikes do have lot mechanism. Even though you see a single hole on lid side, underneath it's seperately channelized.

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That is a breather hole it lets gas out and breathes the tank

All bikes are different

@@tylersmith9767 that is not, look carefully. Bikes are different, but technology are almost similar..

Could anyone help me I have a black hose running from my left side tank to the ground and it’s leaking gas yellow color smells like gas and I’m losing gas can anyone help? Tao Tao TBR7