Ok, replaced the plugs, 7 were OK, normal gray color, 1 was bent down slightly and the electrode fused with the middle part. It idles about 40% better, still somewhat shaky but somewhat better. Can a plug that is bent down slightly on the top be poss. caused by a mechanical issue, such as something bumping it in the cylinder, or more likely just put in that way by the last owner? Also was told has a broken motor mount on 1 side, will get that done soon. ou:
