DUEL TANK PROBLEM UNDER INVESTIGATION BY YOU NOW. PROBLEM CAUSED BY FAULTY CHECK VALVE. ONE FUEL FILTER, ONE FUEL LINE GOING TO ENGINE, TWO FUEL PUMPS (ONE ON EACH TANK). MUST HAVE CHECK VALVE TO KEEP FUEL FROM PUMPING BACK INTO UNUSED TANK. CHECK VALVE FAILURE WILL CAUSE INUSED FUEL TO PUMP INTO UNUSED TANK, OVERFILLING TANK AND CAUSING IT TO LEAK OUT FILL CAP. GAS DRIPS OUT OF FILL CAP. IF VEHICLE HAS DUEL EXHAUST, GAS COULD DRIP ON EXHAUST CAUSING FIRE AND EXPLOSION. DEALER AGREES WITH MY EVALUATION. PLEASE CALL FOR MORE INFORMATION. THIS IS A SERIOUS PROBLEM! *AK