Sounds like our old pal, the petcock. Specifically, the diaphragm. It's a rubber part and we all know rubber parts don't last forever, and they can go bad instantly. All it takes is for a pinhole or other tear or wear to develop and they can produce all sorts of symptoms that you might guess are more severe and related to other causes.
Fortunately, they are relatively easy to check and cheap to fix. Pull the tank, pull the petcock, undo the four screws on the side and inspect the diaphragm carefully. Doesn't take long, maybe an hour or so. But eliminate it first before puzzling over anything happening south of there. Petcock repair kits go for less than $20. If it's malfunctioning, it can cause raw gas to drain into the float bowls, back up and overflow from the float bowls into the intake manifolds, air box, cylinders and crankcase, causing a general mess. Typical repair is replace the diapraphm, drain everything, change oil and filters and clean the plugs. -- 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.
