Motorcycle Questions? Ask a Mechanic.
Hi Chris, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.Initially and if the sparks are present and consistent, then it would appear to be a fuel delivery/partial starvation issue. Proposed preliminary checks (if have not been done) on suspects:
I understand; "...better but still boggs down..."
What is the burn color of the spark plug tip?
Have you re-checked the air box and filter to enure fitted/seated fully/correctly with no possibility of an air leak?
Incidentally, what was the measured output pressure of the fuel pump please?
Hi again Chris,
To clean the injector, please view videos HERE and HERE. Also consider soaking the injector also with a cleaner solution similar to the product shown HERE.
To locate injector for removal, please click HERE. It would be item # 10.
Please click HERE to serve as reference.
Appreciate the post back Chris amd would look forward to an update when able.
Good luck and thank you too for the opportunity to share the information.