GWJ
ArboristSite Member
Be sure the impulse passage way is not plugged-- its a tiny hole that runs from the pump side of your carb through the manifold and down into the crankcase. It provides the energy (pulses) to the pumper side of your carburetor so it can pump fuel to the metering side of the carb. I use 15psi compressed air on the passageway and listen to hear the sound of the air making its way into the crankcase.
Thanks, I will check it out.