Re: Carb trouble?

Posted by gonebiking-2 on Jul 21, 2008; 3:12am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Carb-trouble-tp457737p457738.html

Hi. I have a CB750KZ that suffered the similar problems that you are going through. What you will find is that the rubber inlet tubes from the carbs to the cylinder head over time become brittle and develop hairline cracks. No amount of pouring any liquid over the rubbers will show up any problems. I strngly suggest that you replace all four inlet rubber tubes and the problem will go away.  The carbs will need re-synchronising and tuning again to get the idle right. Also the idle speed on these engines is around 1000 RPM