Strange Lumpy idle.

[lmrdave]

Wild stab in the dark, but have you tired bleeding the coolant system, not sure how the cold start/auto choke works, but on old honda's, bubbles in the coolant would cause it to hunt on idle.

[Dazz]

I'll try anything at this rate, its just at 2500rpm and below,

[lmrdave]

Sounds the same as what mines doing, but mine does it under 2K rpm.

Mines getting a new water pump once I get a weekend of no rain or snow