Has anyone had this problem and how to fix it. When I bought the truck it wouldn't shift right the fuel filter was really plugged up. I dropped the tank and washed it with pressure washer and cleaned it with alcohol. Flushed the main fuel line with carb cleaner and compressed air with the fuel filter off. Can the algea get past the filter and be growing in the cp3 or fuel lines. His there a certain cemicale used to kill it? Been running sea foam in the tank and two stroke oil.