Re: carb issue 1978 CB750K please help

Posted by Lucky 1 on May 22, 2013; 4:16pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/carb-issue-1978-CB750K-please-help-tp4040678p4041092.html

With a performance exhaust and completely stock intake you will only need to adjust the mixture screws.

If you have eliminated all vacuum leaks and the accelerator pump system works,
then I would raise the needle by lowering the clip one notch.


To check the accelerator pump system use a bright LED pocket flashlight and look into the intakes
(ENGINE OFF) Turn the throttle a couple times and see if a squirt of gas comes out of the brass post sticking up in the intake of the carb.

 If it does not then you will need to clean the accelerator pump and make sure the two check valves are working.