Hey everybody, a small problem with my bike, i bought a honda cbr 250 rr about a week ago and it runs but its only firing on three cylinders. I've replaced the spark plugs an checked the spark on every lead and each of them have great spark. We've had ideas that the third carby may be blocked with a bit of stuff an isn't allowing it to get any fuel. I want to replace the gaskets for the carbies but i'll wait till i get the carbies cleaned. Any other ideas would be really appreciated. Thanx everyone.