END OF YEAR BIKE 2018 Winner
Join Date: Apr 2017
Location: Nebraska (The Dark Side of the Moon)
Year/Make/Model: 2006 Classic LT (Buffy)
I had a cap leaking problem a couple of years ago. I assumed my problem was the seal on the cap.
After reading some old posts about the subject I discovered two things I was doing.
1. I was filling the tank to the top off level to get as much gas as I could in the tank. I was doing this during a ride. The bike was hot (operating at correct temp but warm)
2. I would insert the locking cap in and then turn and remove the key.
After reading the posts I realized I should not be filling the tank with cool gas into a warm bike right to the top as the cool gas will want to expand some when warming up (makes sense). Also I didn't realize that even though my cap turns freely after inserted and locked, it becomes tighter and more sealed if I turn it and pay attention to the friction when turning. It most definitely tightens better when I do this.
Bottom line; fixed my leak problem completely. I think my problem was not twisting the cap around to ensure a tight seal.
Good luck with yours.
...On a Steel Horse I ride...
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