Please help,cb750 f1 no spark!

Posted by events on May 11, 2012; 1:26pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Please-help-cb750-f1-no-spark-tp3979945.html

Hi iv'e changed oil and had carbs ultra sonic cleaned,fresh fuel.,new battery,turns over and plugs are getting wet but no spark on all 4 cylinders! I have noticed that the 5pin switch is faulty at the bottom of the ignition barrel,all electrics and instrument lights work,could the ignition switch still be the prime suspect,any insight would be really great,cheers.