Title says it all. I go to start it up and the rpms immediately go out of control, extremely high, and I have to immediately turn it off otherwise she will blow. I have tried several times on different days with the same results. I assume this is internal to the carb because it does not appear to have any throttle cable or linkage sticking issues. This is a manual choke also and no visual issues there either. It is fitted with an old style 2 barrel Holley. My plan is to remove the carb and clean it. Can anyone suggest some troubleshooting for me or suggest things to check? Maybe I am barking up the wrong tree thinking it is a fuel issue?