Onzalimey Posted August 2, 2022 Report Share Posted August 2, 2022 My vent hose from my tank seems to leak really often. Doing any riding it’s been pouring over my bike. I’ve tried routing it different ways to stop it with no luck. Is something broken? Quote Link to comment Share on other sites More sharing options...
lineaway Posted August 2, 2022 Report Share Posted August 2, 2022 Put a one way valve on it. Also heat can cause it too. Quote Link to comment Share on other sites More sharing options...
mcman56 Posted August 2, 2022 Report Share Posted August 2, 2022 Try a clear vent line. Believe it or not, my 2016 Evo gas cap vent was actually auto siphoning. It had a clear vent line and you could see alternating bubbles and gas coming up even when stopped after running. I was pointed to a posting that I can no longer find describing the issue. I disassembled, cleaned, reassembled and the issue was gone. I had to be quite brutal to pry the cap apart and thought it was going to break it but did not. IIRC there were 2 springs and 2 valves in the cap. It was clean inside with nothing obviously wrong. I'm guessing that some of the little parts got out of position created the situation. There was a recommendation for a CSP cap but at the time they only fit 2018 and later. Quote Link to comment Share on other sites More sharing options...
Onzalimey Posted August 2, 2022 Author Report Share Posted August 2, 2022 9 hours ago, mcman56 said: Try a clear vent line. Believe it or not, my 2016 Evo gas cap vent was actually auto siphoning. It had a clear vent line and you could see alternating bubbles and gas coming up even when stopped after running. I was pointed to a posting that I can no longer find describing the issue. I disassembled, cleaned, reassembled and the issue was gone. I had to be quite brutal to pry the cap apart and thought it was going to break it but did not. IIRC there were 2 springs and 2 valves in the cap. It was clean inside with nothing obviously wrong. I'm guessing that some of the little parts got out of position created the situation. There was a recommendation for a CSP cap but at the time they only fit 2018 and later. Ok didn’t know you could pull it apart. Or that it did anything. Maybe I’ll try that with mine I’m guessing something has gone wrong if it’s got moving pieces in it Quote Link to comment Share on other sites More sharing options...
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