My car likes to buck when I coast in gear or if i am very light on the throttle. It seems to buck worse if i am coasting down a hill as opposed to on flat ground.
I've ran codes and got nothing. I've checked the plugs and they all look good except #4 was more grey or whiteish than light brown idk if that is the problem. I've also replaced both oxygen sensors with new motorcraft sensors. Also it seems to get worse the more I advance the timing. So right now i'm running the base timing at 0. Any ideas of things for me to check?
I've ran codes and got nothing. I've checked the plugs and they all look good except #4 was more grey or whiteish than light brown idk if that is the problem. I've also replaced both oxygen sensors with new motorcraft sensors. Also it seems to get worse the more I advance the timing. So right now i'm running the base timing at 0. Any ideas of things for me to check?