Ayuh,...... Sure Can,+ Does.......<br /><br />When you Drained the tank,.. The Silt, Gunk,+ Water is what was Left in it.......<br /><br />There Might be a Screen on the end of the Pickup Tube inside the tank,.....<br />The Anti-siphon Valve could also be plugged,... It's Also located at the "Elbow",.. At the Tank Outlet.........<br /><br />A 5gal. Pail,+ a piece of Hose will make a Test Tank,.. <br />Hook the Hose to the Fuel Pump,+ Drop the other end into the Gas Can........<br /><br />I'd Still take the Carb. apart,+ Clean It........was wondering when i drained the tank at least most all of it, is there possiability of silt or gunk getting sucked up gas tube?