But I've got something stumping me on the simplest engine I have ever worked on. Ok, I know she's no cafe racer but my newest Cushman has me pulling my hair out. It's a flathead air cooled dirt simple engine. I cannot get it to suck gas up the intake to the cylinder. The engine is brand new (I had the local Cushman expert build it because it was cheaper than the machine shop work would have been for me). If I put my hand on the intake port it seems to suck. I took the head off and the valves seem to be sealing. The valve lash is right. The intake is clear of any restrictions. When I bolt the carb and intake on to it it blows gas out into the air filter, and nothing gets to the combustion chamber. Do any of you have any ideas what could be going on here? I'm at my wit's end. Oh and it ran kinda good for one year and then in the spring this happened. It's getting cold so I pulled her out to see what the hell's going on and am stumped. Again I know it's not a cafe, but we did hotrod it somewhat. we tossed the huge alligator body and built a nice light one out of 1/2" coldroll. We also added a jockey shift to the 2 speed "transmission".