has fuel spark good plugs compression anybody else have this problem need help
I have a problem with misfire what would make it misfire has compression plugsok on 2003 Saturn L300
haven't heard a vacuum leak but will check. Had tried a nother coil but did not work same bed miss. any other thoughts if not vacuum problem? Hard Miss fire codes
Fuel injector maybe.
"hard misfire codes"-----------what codes & what cylinder(s)?