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Recent content by Davy Crocket

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    Mercruíser 8.1 Horizon error code 3 Blk Psi Lo

    I have a pair of Mercruiser 8.1 engines in a 2007 Searay. Both engines are giving a error code 3 Blk psi Lo and going into guardian mode. I cleaned all waterways, and the engines are running cool. Impellers are good and good water flow from theexhaust. This error only came up after servicing the...
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