stops

Hi, the FZ6 engine stops at the traffic light quite often. I try to change / set idle speed. Unfortynately it helps shortly. the engine speed changes themselves - faster - slower

I noticed that sometimes when I start riding there is a blinking bar at the tachometer between 0 and 2k (just on the bottom). Then after some time it stops. Anyone knows why it's doing it? It is on a 06 model with digital tacho.