engine light on on 2004 Cadillac CTS

accoring to the computer it showed that the problem was coil,injectors **both have been changed and new spark plugs have been changed also and still have the same problem

by in Corpus Christi, TX on October 16, 2009
1 answer
ANSWER by , October 16, 2009
Here are some of the problems that can cause a cylinder misfire: Worn out Spark Plugs Ignition Wires, Coil(s), Distributor Cap and Rotor (when applicable) Incorrect Ignition Timing Vacuum Leak(s) Low or Weak Fuel Pressure Improperly functioning EGR System Defective Mass Air Flow Sensor Defective Crankshaft and/or Camshaft Sensor Defective Throttle Position Sensor Mechanical Engine Problems i.e Low Compression, Leaking Head Gasket(s) or Valve Problems