Hello everybody, I hope somebody has advice for me. Bike always starts strongly first crank without choke. No problem once the engine is warm.
When it is cold and/or raining, even if parked under cover, it immediately tends to die within 3-5 seconds. If it dies then it will not fire AT ALL, just cranks over and over. Leave it for 30 minutes, then it starts instantly. If I manage to get moving, it runs very rough (sounds and feels like on 2-3 cylinders) and exhausts a LOT of vapour for about 1 km, then rides normal after that. One day I rode into a rainy patch, and it became rough until I passed through the rain patch.
Bike is fully stock. New plugs, battery, air filter. Plugs, jets, oil looked clean at the last change. Float valves were leaking; new float valves reduced the severity of the problem, but it still dies.
Any ideas? Thanks.