I have a 1971 55HP Chrysler. I put a gas filter in the line between the fuel pump and the carb. Purolator F50153, per Frank. I can see air going into it. Engine runs rough. but think I have piston problems, also. One piston has acne. More I accelerate, more air goes in it. It has an old metal fuel tank. Bulb looks worn. I recently did fuel pump, so it has new diaphragm and gasket. I saw a gas tank on ebay, portable. I quess being that my boat is old I can get that and get new adapters for it. Tell me what you think and how to solve my problem. Thanks
