I have this code. I already moved my coil to another coil and the code didn't go to another cylinder, so it's not the coil. I changed all my spark plugs about a month ago, but I removed the one from cylinder 3 and put it in another cylinder and the code didn't go to another cylinder either. I also changed the injector and the problem still persists. The car feels like it's having a misfire and my exhaust makes small popping sounds and when I roll down my windows the car revs lower. Please help.

 

What spark plugs did you use, and where did you buy them? Amazon and Ebay are notorious for knock off NGK spark plugs.

 

I just changed the spark plugs to NGK iridium ones, but the smoke and popping still persist.