I bought this car in Jan. of 2009 and it had 149000 miles and ran great. I changed the fuel filter in August 2009 and the car has had a problem ever since. When I accelerate it has a check engine light on the dash that will start to flash if I accelerate hard. If I just accelerate real slow It is not a problem. I also went from getting around 41 mpg to about 29 mpg. When I go to a parts store and they read the code it is saying a miss fire on cylinder 3. I have parts stores that want to sell me knew plug wires, heres the thing, If it was the plug wires it would have acted that way before I changed the fuel filter. I used the correct fuel filter and the flow is the correct direction. I think I might have air in the fuel line or clogged up the number 3 fuel injector when I changed the fuel filter. However I can't find how to bleed the fuel system to ensure that there is not air in the fuel system.