cylinders misfiring on 2004 Mercury Monterey

My van is misfiring and I have replace the spark plugs,wires,ignition coil and clean the MAF sensor.Can you tell me the possible problem?

by in Terrell, TX on October 10, 2009
1 answer
ANSWER by , October 10, 2009
get a diagnostic to see what codes you may have, it could be a broken air line somewhere in the engine