What carb you running Gene? My wife's R was doing that with the 38as & like you mentioned dropping the pilot one size fixed the problem.
So when mine is cold fires up fine. But when hot it takes a few kicks. Let it cool down starts first kick. Makes me think I'm a bit rich on the pilot side. What is everyone's thought on this.
Thanks
Sounds a little rich to me also.
Check the float level first then check your choke circuit to make sure the rubber on the end of your choke plunder is ok and that it seals on it's seat when the choke is off. If the choke circuit is not allowing any fuel to pass when hot, drop the pilot a couple of jet sizes and see if it helps the condition.
When we machine a PWK, the shroud that surrounds the needle has to be removed to machine the air flow passageway to 41.5mm. The special moulded o-ring that provides the seal between the shroud and carb body often does not reseal 100% because we cannot get new o-rings from Keihin. When this o-ring does not seal, the pilot jet can get fuel from the main jet circuit and vice a versa. This is another reason that I prefer not to bore the PWK series of carbs. I do not have a solution for you if this o-ring is your problem.
