need help trying to help my friend fix his MR2 [Archive] - Toyota MR2 Message Board

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Hey guys, A friend of mine suddenly lost power in his 1991 MR2 NA. When I got to it the engine started but, ran very rough. After replacing the spark plugs I have determined that cylinder 4 is not firing. We plan on replacing the wires 2morow but, does anyone else have any suggestions? What should we do after the wires? thanks!