"Yawning" is the best way I can describe it. I'll be running along nice and fine at WOT and all of a sudden engine pitch changes to the "yawn." In fact it sounds just like releasing the clutch without the fuel on. If I throttle down, the engine picks back up and runs just fine again.
Have any of you run across this and what could be causing it?
Have any of you run across this and what could be causing it?