A couple days ago my I went to turn on my 06 Jeep and it cranked but was making a weak sputtering sound, shaking the car. I suspected it was because of the cold weather and let it warm up and it went away within a few minutes. This morning I went to turn it on but I cranked it and again the weak sputtering continued but the car died. I cranked it again and revved the engine to keep it from dying (I know that's bad but I had to get to school).
I suspected either the ignition coil or spark plugs were bad after doing a little bit of research. I went to check the codes after getting home and code P0300 popped up and my suspicion was confirmed. I checked the spark plugs to see if any looked in bad condition and they all were in rough shape. I went to buy some replacement ones, I went with NGK. but once I installed them and turned the car on to crank it, the sputtering happened for a couple seconds and went away. Is it the ignition coil or something else? Its a 2006 4L 6 cylinder wrangler x for reference.
I suspected either the ignition coil or spark plugs were bad after doing a little bit of research. I went to check the codes after getting home and code P0300 popped up and my suspicion was confirmed. I checked the spark plugs to see if any looked in bad condition and they all were in rough shape. I went to buy some replacement ones, I went with NGK. but once I installed them and turned the car on to crank it, the sputtering happened for a couple seconds and went away. Is it the ignition coil or something else? Its a 2006 4L 6 cylinder wrangler x for reference.