Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Make , model, engine? Fuel pump or gravity flow from tank to carb? Was fuel bowl full of fuel when you removed carb?
So likely the fuel in tank is old and is contaminated, restricting flow to the carburetor. So new fuel , clean tank and hoses, new filter, down to the carburetor.