ORIGINAL: gsmith6879
He tore down the DLE carb and found a significant amount of hardened white gunk on the screen. He chipped that off and cleaned the screen. The engine then started right up and again pulled the Hellcat with authority. Six fights later the same thing happened. This time the screen was plugged with a soft gray gunk. Came off much easier.
The hard white substance is corrosion from the moisture in the fuel. It doesn't just happen over night, but from storing with fuel still in the carb. As the fuel evaporates the moisture is left and builds over time. I always draw out the fuel left in my tank, then start the engine to run out the remaining fuel in the system before I leave the field.
Could someone explain how bearing material can go from inside the crankcase to the fuel side of the carb? I can see it in the venturi, but it would have to pass by the jets and needles to enter the fuel bowl side of the carb.