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fouled spark plug
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  1. Engine, Intake, Exhaust, Induction
    I changed the plugs on my recently acquired 2001 Tundra with 115k miles ( I believe they may have been the original plugs). Seven of the spark plugs looked like the one on the left, but the one on the right is the outlier. This oily plug was also the loosest plug; not rattling loose, just not...
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