Re: Cleaned my carbs, bike won't run right. Pls help

Posted by Lucky 1 on Jan 20, 2013; 9:18pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Cleaned-my-carbs-bike-won-t-run-right-Pls-help-tp4035484p4035499.html

Does your 1978 CB750 have the stock exhausts and the stock air filters?

If not .....it will NEVER run right until it is rejetted.
Also the accelerator pump system MUST be working.

To check it  get a bright led flashlight and when it is NOT running but has the gas turned on look inside the intake at the carb and turn the throttle a couple of times. You should see gas squirt from the brass nozzle sticking up in the throat of the carb.
If you see no gas squirt then you will have to check the accelerator pump and get it working.
IT has two check valves and the one in the bottom plate of the accelerator pump has to be working or the whole system will not work.