Join Date: Jun 2015
Location: Brisbane, Oztralia
Mentioned: 30 Post(s)
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What's the history of the bike?
Is this a new problem? If it's a new thing, it could be something as simple as dodgy fuel, so a drain and refill might be in order. The odd missed beat on tickover isn't unusual. All engines do that in my experience, though it shouldn't be very often. Tickover speed looks OK - too low can cause stalling.
The principal difference between hot and cold running is of course the mixture, which is why you checked the air filter I'm guessing. Could be worth running the bike for a while, on the road to keep the speed up, then leave it to idle till it dies, then take the spark plug out and check the colour.
Fuel vaporisation? Is it hot where you are? This can happen when idling, because of course heat rises when stationary.
I propose to live forever. So far, so good.
To date: Honda C70 Super Cub, Honda CB100, MZ125, MZ250, Suzuki GSX1100F, Yamaha XJ900, Kawasaki ZZR1100, Yamaha XJR1300SP, Honda NSA700, Honda CBR300R