I have a 2004 Chevrolet Cavalier/2.2 ecotec/ I have an engine that runs like it is on 2 cylinders. I ask this question earlier and did what the tech told me do. I have changed the spark plugs,coil pack,performed a compression test(all at 180+), pulled the injectors and swapped them out with other cylinders(because#2and#3 are black carbon sooted). I scanned again and get the same PO300(random/multiple misfire) code. It is the only code the comes up.I still can not find the failure..
Optional Information:
2004
Chevrolet Cavalier 2.2ecotec