My car fail the emissions test.
P0300, 1, 2, 3, 4 Random/multiple Cylinder Misfire Detected.
P0401 EGR Flow Insufficient Detected
P0402 EGR Flow Excessive Detected
have the same problem?
Monday, May 18th, 2009 AT 2:02 PM
P0300 normally caused by vacuum leaks and bad fuel
Engine Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.