Sputter and no power @ 50 mph
86 Vulcan w/ 11,400 miles. starts good, idles good when warmed up.
here is the problem...
this is an intermittant problem - last sunday i rode over 100 miles with no issues (but had a lot of seafoam in the tank). now this problem is here a lot - but it does go away every once in a while (after stopping at a light or stop sign).
driving @ 50-55mph in 5th gear, the bike sputters, bogs, and pops under full throttle with no power. it will still stay at 50 and cruse, but try to accel and it has 0 power. down shift to 4th and floor it and it accels to 60, but not hard like it should. sometimes it goes away and the bike runs fine for a short amount of time.
1st - 3rd (even at low rpms) is fine - the issues are only noticed in 4th and 5th only
could the splines on the rear drive be messed up? the bike gets a vibe when it is trying to accel and it sputters.
my though is - if it is the splines, it will fail constantly and the rpms will increase with more throttle - not lack power and bog.
i have an appointment with the dealer in 2 weeks for a carb clean and rebuild, but if anyone thinks i should try something first let me know.
just a fyi... i can, but don't have time to rebuild the carbs myself (new baby at home) and i need this bike fixed quickly.