Hello,
My 318 has been missing/stumbling a bit. Sometimes worse than others. I noticed a spark arching from the left plug wire to the small nut on the left of the cap. I tested and got no spark at the left cylinder. Other side looks and sparks great. The left plug must fire most of the time though because it starts right up and will run strong, then start to stumble a bit, then fine, then stumble pretty bad, etc. Here is a picture. The trouble one is blackened. And the wire for that spot is blackened and has some fabric or insulation threads or something in it.
Does this mean the cap must be replaced or might I be able to clean it up and get a new plug wire? Any idea why this happened?
Thanks for any help!
My 318 has been missing/stumbling a bit. Sometimes worse than others. I noticed a spark arching from the left plug wire to the small nut on the left of the cap. I tested and got no spark at the left cylinder. Other side looks and sparks great. The left plug must fire most of the time though because it starts right up and will run strong, then start to stumble a bit, then fine, then stumble pretty bad, etc. Here is a picture. The trouble one is blackened. And the wire for that spot is blackened and has some fabric or insulation threads or something in it.
Does this mean the cap must be replaced or might I be able to clean it up and get a new plug wire? Any idea why this happened?
Thanks for any help!