Dmitry wrote:I have same exact problem, idles high cold, no choke, then comes down.

Noticed oil leak from crank seal so it's coming apart now, suspect that may be an air leak causing it

Hi Dmitry,

I seriously doubt if mine could be the same problem, I totally rebuilt my engine, new (genuine Honda) seals all round, no leaks to be seen anywhere. The only seal I did not replace was the centre bearing inner seal on the crank, did replace the thin rubber one on the outside of the bearing casing. I did however check the centre inner seal when I was building my motor using very primative means, when I had the two casings together I poured some petrol in the one crank case and checked if it maybe leaked through into the other... tested fine.
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