Yesterday afternoon i went out to clean my car at the car wash which is a few miles away, the car drove there fine, then i cleaned it, then it started and i started driving home, it started running really poor and the throttle was all or nothing, so i took it home, took the filter off and it looks like its flooding and the only real induction is through where the automatic choke is, and smoke is coming back up through the inlet, this happened to me on my last spi and turnt out to be broken up cat blocking up the exhuast, but this one has the cat removed, so what could it be? Stuck valve maybe?