Have you had it running bypassing the gas tank? I wouldn’t have suspected the float valve or needle valve. I suspect the pilot jet or slow speed jet (same thing) but if you’ve cleaned it then I would suspect some sort of contamination prior to the fuel getting to the carbs. Is the spark plug in #4 wet or dry after bike has been running on other three? Have you synced the carbs with bike running, any reading on carb #4?
On Mon, Apr 6, 2020 at 2:02 PM '[email protected]' via Nighthawk Motorcycle Lovers! <[email protected]> wrote: > Hi Graham, > I’ve just replaced the carbs for the fourth time after cleaning > everything. Every time I replace them I seem to have a different problem. I > replaced the float valve in #4 because the same problem was there before. I > have tried in the past to remove the float bowl in situ, but gave up > because I was worried about damaging the heads of the screws. > > -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/nighthawk_lovers/10f0b8aa-6927-4f1e-8d17-507348ccae4e%40googlegroups.com > . > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/nighthawk_lovers/CAGg-qp2NBNJWpQg847%3Dxmf5B_kGpFEihxd0jZeZfYm2tj-e11g%40mail.gmail.com.
