Engine Mechanical problem
2003 Saturn L300 6 cyl Two Wheel Drive Automatic 123000 miles
I have had a P300 code on my Saturn for awhile. I have had the spark plugs, ignition coil replaced. Just had the fuel injectors cleaned, replaced the oxygen sensor and it still will not go away? Any ideas. My trust in any mechanic is going down the drain with my wallet. Any help would be appreciate!
P0300 Random Misfire normally points to vacuum leaks and bad fuel
Engine misfiring 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.