hey there all..
My name is Patrick and im from south arfica
Im a proud owner of a gsxr400 gk 76a... till lately.....
If there is anyone that can give me some advice on me bike. The thing is that i cant get my bike to rev up.
I had the carbs done..Replaced the wiring and the coils, plugs, plug wires and sepressors. but no luck...
Then i had the head done and the shims. Replaced the rings...And still no LUCK...
I had a nother set of carbs on me bike and it still dont want to rev up...
PLZ PLZ PLZ IF ANYONE CAN HELP ME

Maybe cdi, if not check all your breather and fuel pipes are not getting kinked or crushed.

Also, did yo change the o rings in the carbs?