Hey all
So having some more trouble with this fickle beast of mine. The model is a CB550F2 1977.
When I rev up the engine, the revs hang in the highs, even though Im idling at around 1100. It does this almost every time I rev up. Also, if I let it fall down completely, and then turn the throttle fast, the engine turns out. Lastly, I got the occasional popping and small explosions in my exhaust.
I have checked that there is no carb leak with some carb spray, and I've also vacuum synced the carbs. The air mixture screw is turned out about two full turns. I tried 1,5 turns as well, but with same result. When I go one turn only on the air mixture screw, the bike doesn't idle, but just goes out. Also, the carbs got cleaned half a year ago.
Lastly, my choker is acting up. Out of nowhere, its sorta stuck in a certain position, and I have to sorta "click" it out of it. I have checked if there is anything physical in the way of it turning freely, but there is not. What could this be?
Here is links to videos illustration all the problems. Somehow I have a feeling they are all interconnected…
Choker not turning freely:
https://youtu.be/9xfIopnMSzUEngine stops when turning throttle fast:
https://youtu.be/NTRt5yrF5UQ Revs doesn't come back down:
https://youtu.be/DTc0kpwH6r4Any help is greatly appreciated!