P0300 97 Subrban 350....
did a tune up, car ran fine for a month, now has a miss and P0300 code.. cylinder #2 has many missfires according to my scanner, thought it was an injector, so I replaced it, still has same problem... any help would be appreciated..
Buy the distributor cap from the dealer instead of the parts store and recheck it! Cheaper caps bleed voltage over from the wrong cylinders and burn the rotor out rather quickly if not changed!