I've heard the term vapor lock used specifically when talking about airplanes or cars that are fuel injected. The term is related to gas that is in a fuel line that evaporates creating a bubble that can not be pushed through the line. The solution is indeed to get the fuel back below its vapor pressure (it condenses and the bubble goes away) and the fuel will flow normally again. I have not hard it in reference to the level of fuel in a tank, although on a motorcycle your fuel pressue depends on how high the fuel is above the carburator so I'm not positive. Different fuels may have a slightly different vapor pressure depending on additives, thus thebetter experience with Shell fuel...
"E" On Apr 13, 4:38 pm, Don Simpson <dk...@hotmail.com> wrote: > Years ago I had a similar problem with my V45 Sabre, After riding 30-40 miles > on a hot day the bike wouldn't start. My mechanic diagnosed it as "vapor > lock". After waiting 30 minutes it was fine. Said the remedy was to fill > tank only 2/3 full. I also noticed I rarely had the problem when I used > Shell fuel..... > > DON SIMPSON > 93' 750 NIGHTHAWK > West Central IN > > > > > > > Date: Mon, 12 Apr 2010 14:32:08 -0700 > > Subject: [Nighthawk Lovers] Re: 83 550 Gas Cap Seal Question > > From: surfs...@gmail.com > > To: nighthawk_lovers@googlegroups.com > > > Something no one else has addressed: > > > Gas expands when it sits in a enclosed tank in the hot sun, whether > > the tank's been filled with the bike on its center stand or not. The > > fix is to not fill the tank too full. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Nighthawk Motorcycle Lovers!" group. > > To post to this group, send email to nighthawk_lov...@googlegroups.com. > > To unsubscribe from this group, send email to > > nighthawk_lovers+unsubscr...@googlegroups.com. > > For more options, visit this group > > athttp://groups.google.com/group/nighthawk_lovers?hl=en. > > _________________________________________________________________ > The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with > Hotmail.http://www.windowslive.com/campaign/thenewbusy?tile=multicalendar&oci...- > Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to nighthawk_lov...@googlegroups.com. To unsubscribe from this group, send email to nighthawk_lovers+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
