I have an aftermarket gas cap on my bike, the kind that threads on, and it seems to vapor lock if you do not occasionally open the gas cap. I have a friend who has the same problem on his hawk. I made sure the gas cap is mounted correctly it has a little arrow that points towards the front of the bike. Does anyone have any ideas on how to prevent this?
I've heard suggestions about drilling a really small hole in the gas cap to allow it to vent, would that work, and is this problem common?