Hi everyone looks like this is a great place to find answers to your cart problems. I have a 93 marathon with a 4cycle engine. I noticed that there was no fuel coming through the fuel filter so I put a new pump on. It still will not run. I cleaned the pickup tube in the tank, bypassed the filter, and cleaned out the vacum hose from the engine to the pump. It seems I have good vacum at the pump. Does anybody have any other suggestions?