Hello
I just bought the vehicle and have been looking over records. New plugs (NGK R) BKR6EKPB11 installed last month and new wires 30k miles ago. I have pulled the plugs and the plug on cylinder 2 (front of engine on left) was black and the others all looked good but the plug in cylinder 1 (rear of engine on left) has 2 burn marks on the porcelain near the dual split tips. I pulled the 3 front coil packs up out of the car with the engine running one at a time and they all had good spark. Then I pulled the 3 wires off the front coils that go to the back plugs and cylinder 4 coil wire that goes to the rear to cylinder 1 seemed like a reddish color spark?? I also tested all the fuel injectors and unplugged all 3 in the rear and the car ran different so they are working. When I unplug the first one on the front (cylinder 2 fuel injector) the car does not change at all and the other 2 on the front the car caused the car to change. So I tried switching the injectors from cylinder 1 to cylinder 6 and cylinder one with the good injector from cylinder 6 still had no change?? I listened and felt all 6 injectors and they are ticking strong....I am stumped. Thanks in advance for any ideas.
It worked fine until I fixed it! 
Linear Mode
