07 Speedmaster rider here in Alberta Canada. Riding along minding my own business yesterday when one of our famous prairie downpours came up and shat upon me. If you’ve ever seen one of these storms, you’ll know what I’m talking about. Anyway, after about ten mins, my bike decided to act like it was starving for fuel, so off to the hard shoulder we go. It died and no amount of coaxing would get it to restart. I doubted it was bingo on fuel, having only fuelled up 50 miles back, but popped the cap just to be sure. Plenty of fuel, screwed the cap back on and waited a few mins, hit the button et voila, startage! Rolled on for ten mins and it happened again. This time I popped the cap right away and hit the button again, in business! No further incidents. So, finally getting to my question, are modern 21st century tank still subject to vapour lock, and what would rain have to do with it? Makes me a bit wary about taking her on the freeway if it’s going to be a common occurrence. Thanks for any input.
That was my first thought too, but I did nothing to dry off any components, and it pissed down the entire time I was sidelined.
Opening the fuel cap makes me think that the fuel cap vent is blocked or the fuel tank vent system. Do you have a charcoal canister fitted for emission control ?
My first thoughts were the same a Oldyam's, i.e. an airlock. If it happens again, try to open the filler cap when it is quiet where you are and listen (with helmet/earplugs removed) for a hiss when the cap is slowly opened. If it does hiss, then you have an airlock. If not, then look elsewhere!
