At 50K, dealer replaced valve cover, fouled plugs with new valve cover design. At 75K, while on vacation, CEL came on, mechanic replaced plugs and wires. Just hit 120K and CEL came on. PO301 misfire code came up, dealer came up with PO175 and PO 172 code, replaced fuel injectors. $2200 later I picked it up and CEL came on again after driving 40 miles. Guess what, the PO300 code came up again and they replaced the valve cover and 1 fouled plug. Did I get hosed or do I need to cut my losses and sell it and get a new vehicle.