looks like carb problems
Posted by freek-3 on Jul 17, 2008; 10:27am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Need-some-Advice-on-problem-tp457815p457816.html
Hi I had the same problem, openend my carbs top, cleaned and streched the neadle jet springs and shuffled the units arount until they moved freely.
Another problem I had was the bike would run fine up to 4000 refs byt no futher,
after extensive cleaning and checking I found one needle jet broke of and got stuck.
also make sure all extra pipes from the carb, is sealed.