Morning all, I have a 2001 Focus SE Wagon with the twin cam motor and 127,000 miles. The last 2-3 days it has been acting like a cylinder is not always firing. At speeds at or above 50mph the engine light will start flashing and a vibration starts. I am over due for an oil change and just changed the spark plugs last night with Motorcraft double platinum plugs gapped to 0.050". My gas comsumption is higher then normal. Also, here in Michigan the weather since Saturday has been between 10 degrees F and -10 F. Any advice is appreciated.
Finn