Gilson collector
New User
My old cast iron Briggs and stratton 320424 14 horsepower horizontal shaft has been acting up lately. It takes forever to start and when it does I have to hold it at idle until it goes to the right idle speed. I can then slowly let it throttle up and it will run pretty good after that. But if the engine even does so much as try to go above half throttle the engine slows way down and barely runs at all. It just sputters and occasionally fires to stay running. The carb is brand new and is in good shape. So the only issues I think this could be are ignition related (it does have points) or the issue is an out of adjustment carburetor. I am not familiar with these old briggs as I normally work on old Kohler K series. So any help such as carb tuning procedures would be greatly appreciated.