Post by mooreperformance on Dec 27, 2012 18:34:13 GMT -5
Kinda sounds like it is running rich. I would suggest a new needle and seat in the Walbro "Float Style" carburetor. It is probably not seating (sealing) at an idle causing raw fuel to enter the engine. Pretty easy fix! Pull the float bowl off and inspect the bowl for dirt and replace the needle and seat underneath the float arm. Probably will need a new float bowl gasket too. Nice part about the Walbro float carb is that they are easy to understand (and fix)!