Recent content by HenryBoat

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    Mercruiser 5.7L (350 CID), 260 HP spark plug replacement

    I have a 1988 Mercruiser 5.7L (350 CID) with 260 HP I/O. The spark plugs are very difficult to remove and install. Do the exhaust manifolds need to be removed for this engine? My normal deep well 5/8" spark plug socket wants to "bind-up" when removing or installing the spark plugs. I have also...
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