Rough warm up?

[simonm]

my monies still on pilot jets.....worth draining carbs first though 

I wouldn't have thought it was the pilot jets.  According to this:http://www.dansmc.com/carbs2.htm it would be the pilot/idle jet.  But since it goes away when it's warm it would be unlikely?


I'd have thought it would be a choke/richness problem but anything where you could get condensation going from cold to hot and/or water would be a fair bet too.


please let me know if you want any more uneducated guesswork, I'm always up for talking knowledgeably about things I'm Ignorant of :-)