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    Mercruiser 4.3 Temperature Fluctuations

    Hi guys, I'm new to the forums as I haven't owned a boat in years but picked up a nice clean circa 2001 19' bowrider with a 4.3 Mercruiser EFI and A1G2 outdrive a couple of weeks ago. This is a raw water cooled boat and has been used primarily in fresh water but occasionally in salt. From the...
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