I have 1976 Honda cb550f and I've changed the intake manifolds, cleaned and changed the gaskets of the carburetor, yet when the engine is running hot, the carburetor starts smoking and and the RPMs will still hang high. So if it's not a vacuum leak what could it be?
Also, I feel a stronger output from the 2 left exhaust pipes compared to the 2 right pipes. What's not right?
