Hi tp everone. This is my first time on here. Hope you all are ok. Right I brought a 1000rr6 and the bike hadnt been used alot. I thought when I took it for a test ride it was because it was a cold day didnt ride too far. So when I did get out on it for a proper ride I have noticed that at 2500-3000rpm the bike judders even when bike had warmed up. When it ticking over its ok for abit then the bike revs increase now and then on its own as if the choke has come on although the engines hot. Also have had abit of black smoke and the engine tone changes like a moor muffled sound. When I get passed 3000rpm it runs fine can any one help please???.
Welcome. How old is the fuel in it? Might also be worth checking the air filters/box for dead creatures.