Is your fuel line clear? These bikes just don't use that much fuel and when the carb bowls are full, it could run for several minutes driving or maybe even 15 -30 minutes at idle. So a bubble in the fuel line, I can't imagine, would matter. If it runs well while driving, quit looking at the fuel line. If you don't like what you see, sometimes it is best to stop looking.
Your problem sounds exactly like mine, except when mine wouldn't start (1 out of 3-10 times), I was almost always not at home, so waiting was hardly an option. I had to crank and crank, wait 5 minutes and try again. A few back fires, literally people ducking, seemingly no desire to run (the bike, not the people), then on one attempt it just started like there was never a problem. When it DID sit for the 1 or more hours, it always started perfectly. I replaced plugs, battery, ran two bottles of Seafoam, etc. seemed to help, but not fix. At this point, wouldn't start 1 out 8-10 times. Now, I turn off the petcock 1/4 mile or so before I stop, or even after stopping when I forget, and the only problem I have had, still can't claim it is fixed, is keeping the bike running when I do start it. Starts up fine, so far. Keeping it running, as it turns out, is easily fixed by turning the damn fuel back on. When I ever get this bike back to MY home, it is in another city where I work as my "other" bike, I plan to clean the carbs. If I have the problem again, and this may help you, I will changed the coils. Like someone said above, try jumping. I kinda doubt that, assuming you have good battery, but... Carb cleaning is my best guess. Then coils, followed by starter. If you haven't done it, replace the vac line to the petcock, too. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
