Topic: 1978 CB750F Idle Problem

[GEARBOX]

Hi All,

       Had my carbs cleaned and rebuilt last year and getting a consistent idle problem.  Bike will start up and rev throughout the range nicely, however it will not hold idle unless the choke is partially pulled out and locked, hot or cold.  Tried adjusting the idle but no matter at what position, the bike will still stall out if the choke is not pulled out a bit less than half way.  Brand new slow idle jets were installed.  Any ideas?  Thanks Allan 

[flybox1]

What carbs do you have?  PD what....?
If it idles better with the choke on, it means your idle circuit is too lean. 
You need to tell us what you're running for intake and exhaust, what your fuel screw is set at, and what your pilot jet size, and brand is....we need more information to help you.

[LesterPiglet]

Check for air leaks in the carb boots.

[flybox1]

+1
Good one Lester.   That would also require choke to operate correctly.