I'm leaning towards the diaphragm being the issue - it still runs fine at lower speeds - so not sure about the trash issue.
I'll probably order the kit and pull it apart this weekend. Wondering if I should coat the tank at the same time... -Dave On Tue, Jul 6, 2010 at 5:40 PM, surfswab <[email protected]> wrote: > Sounds like the sustained high speed might have sucked some trash into > it. Or there's hole in the diaphragm. Its purpose is to hold a > "valve" open so fuel will flow for as long as there's vacumn applied > to it. Insufficient vacumn, no -- or slow -- fuel flow. > > I would pull the tank and drain it, pull the petcock and disassemble > and inspect the parts very carefully. Use a magnifying glass if > neccessary to inspect the diaphragm for a split, a pinhole, or a > tear. > > Clean the nylon screens meticulously. There are two -- one in the > bowl and a "sleeve" that fits over the feed tube. And inspect the o- > rings, also two -- one in the bowl and the other secures the sleeve at > its base in the throat of the petcock. > > Check the vacumn supply tube from the engine to the petcock for > leaks. And clean everything twice. Regardless of what you do or > don't find, I'd install a rebuild kit. They're about $20. Your > bike's 30 years old and the rubber's tired. > > > > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
