hi i have 2.5 contour sport it has 99000 miles on it, a couple of weeks ago it had a high rev bog- flatspot, so i replased the fuel filter and spark
plugs then i ran some injector cleaner throw. this did stop the bog but after like a hunderd miles started having a low end sputter. when it happens the motor is warm and it is only when you accelerate slow if you floor it she gos good. another thing is it started to not start the first try, until this started i thought it might be the tranny because it feels like its skipping, but fuel or spark problems could make the same effect. thanks