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  1. Random Multiple Misfires

    Cadillac STS Forum 2005 through 2012
    I bought a 2005 STS a few weeks ago. I knew it needed help, call it a rescue(well maybe). First thing I did, after checking fluids of course, was change out the spark plugs. When I did that, I found oil in a couple of the wells, so I swapped out the valve cover gaskets. No more oil in the wells...
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