Cylinder 3 misfire at low revs

[Whomightyoube]

I have just started on full choke which was not as easy as starting without any. 3 exhaust got hot but not as quickly as the others. When I took choke off, the engine stopped. I then went for a ride. All four smooth for several miles. Short stop at junction OK. Another slightly longer stop at lights where I let it idle  30 seconds and down to 3 and lumpy at low revs all the way home.


My bike don't like red lights. How does it know ?