I would have my CB350f on the road, but its got carb problems. It wouldn't run properly, usually Cylinder No.3 wouldn't fire at all. Then No.2 gave up the ghost. This was traced to the main jets and the 'O' rings, which of course were 45+ years old and petrol was leaking passed the 'O' rings. A new set of jets and hurrah we have all 4 cylinders working. The next snag was that I couldn't get the bike to idle properly. It would idle nicely on start up, perhaps with a tweak on the throttle stop screw, but out on the road at every stop the revolutions per minute would be around the 3000 mark. Leaky float needles perhaps. There was a dribble or two from some of overflow tubes when the tap was turned on, but stopped as soon as the engine started. So, another strip down and new float needle assemblies fitted. A bench test before putting the carbs back on the bike and hey presto, petrol pours out of every possible outlet when you turn the tap on. Oh pooh! or something along those lines. Float needle problems I guess and detritus lurking somewhere despite having the carbs ultrasonically cleaned.
The seats for the float needles (new after market jobs) don't look to clever with the aid of a magnifying glass, but I wouldn't have expected petrol to gush from the overflow tubes, a dribble may be. A new set of Genuine Honda float needle assemblies have been ordered for CMSNL at great expense. Meanwhile, has anyone had similar problems? I'm sure this is not restricted to just the CB350f. Anyone know of a good carb rebuild person(s)?
Eric