Hello,
A friend has a 87 M103 motor that only has 45k. He was complaining of rough idle and we decided to take a look at it. The car is in superb shape, but when we pulled the plugs they were in very bad shape. We installed plats, but then I remembered those were no good, so about 3 days later we pulled the plats out and put in coppers. The plugs had oil all over the tips. He says the car runs great now, but only after 3 days and oil on the plugs? My 104 doesn't do this. Is this normal? What should I check first? The original plug #1 was in really bad shape. Any ideas? Thanks!
Brian

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Brian W. Heitman

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