Alright guys, here's a problem for you. I have a 2001 Bunton 61" Hydro W/B with a 18hp B/S Vanguard. I had a problem with it stalling last week, and I would let it rest and it would run again for a minute or two and stall again. Well while it was down I changed all the fluids/filters, and cleaned the carb and fuel accelerator (assuming thats what it is, pre-carburetor diaphragm after the fuel filter). Well when it sputters for the 30 seconds before it finally stalls, you can see the fuel filter emptying and thats it. I am thinking either a vacuum problem or maybe fuel tank debris? P.S. Also, I noticed that after I cleaned/changed everything, it ran for a good hour or so and then I hit some good bumps and all the problems came back again. Thanks for any help you are able to give me, I really appreciate it.