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We bought an Audi A^ 3.0L with 112K miles. When changing the plugs, cylinder #2 had a lot of oil in the well. A 5/8" socket could not remove the plug. It's like it can't catch the nut. We cleane...
It seems to happen after I have been driving the car for over 20 minutes at one time. Do you think it might be a sensor issue or a serious problem.
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