Brad,
Are you sure? If that's the case, it would be rotating correctly. This is my first blower and I always assumed that they would rotate tward each other at the top to discharge the compressed air in the center of the intake. The truck would fire just for a second and die. We pulled the plugs and they were dry. When we pulled the blower the intake was dry. We figured it was firing on fumes. I was assuming that the blower was sucking air from the motor instead of feeding it. But now that I think about it, how would it be compressing air in between the rotors. It would compress the air against the housing in the cavity that the rotors mesh in the middle? Is that right? If so, I think I have a questionable carb. We smelled fuel like crazy, but the race fuel I run is very pungent. I'll try again with a different carb. Thanks for the help.

RubberDuck