Per Biker and Dinqua's suggestion I went out yesterday and got two new plugs and installed them at work, rode home the long way and pulled them ( ****** them motor parts are hot).
The new plugs looked like new plugs. The old plugs (since spring) looked to be more white than tan so am I correct in thinking I am running a little lean?
So what's the next step, up the mains to 132 or pilots to 42 or both? Keep in mind the problem presents itself mostly at the end of the throttle.
ModelMaker
