Haven't got looking at it yet, but when I start my Kawi23 the motor is only running on one cylinder. After running for a couple minutes slowly but surely the other cylinder begins to fire and eventually comes around and it'll run on both. Any ideas what's going on? It's only got about 200hrs on it I think and it's been serviced regularly. Seems to me if it was a coil going out it'd be the other way around. It would stop working after a bit not start working. The only other thing I can think of is the plug is fouled. I noticed over the summer that it seems to surge slightly while mowing at full throttle. You can only tell though with muffs on. Wonder if the dealer never got the mixure right when he put the Hiperf air filter kit on it the other year.