My 1300 is temperamental in the morning when itís cold out. I often ride below freezing in the morning. For the first 1/2 mile she will chatter her teeth, but then warms up and runs like normal.
When I first got her last Aug she did this when it was warm out as well. Cleaned the air filter and the carb and that took care of that.
Sitting on my VTX making vroom vroom sounds.