de_prooij
CB750 New member
Good evening, I have a problem with my 1979 cb750KZ where I would like to ask your help for.
The bikes starts pretty well, and in neutral (when warm) it revs up all the way. When I start driving the power seems to be completely gone. In gear 1 and 2 in the end (the old Daf66 from my mom was faster) it revs up all the way, but in the other gears the air resistance seems to win... It might be that the main jets do not come in.
I have disassembled the carb completely and cleaned them ultrasonic. The air filter is clean. The battery charges normally.
Does anyone have an idea on how to find a sollution for my problem? Does this problem sound like a Spark/timing problem, or like a fuel problem?
The bikes starts pretty well, and in neutral (when warm) it revs up all the way. When I start driving the power seems to be completely gone. In gear 1 and 2 in the end (the old Daf66 from my mom was faster) it revs up all the way, but in the other gears the air resistance seems to win... It might be that the main jets do not come in.
I have disassembled the carb completely and cleaned them ultrasonic. The air filter is clean. The battery charges normally.
Does anyone have an idea on how to find a sollution for my problem? Does this problem sound like a Spark/timing problem, or like a fuel problem?