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    Volvo 3.0 gs hydrolocking nightmare HELP!!

    Ok I have a volvo 3.0 gs with a san juan engineering heat exchanger on it. I am on the seccond engine with the same problem! It is a 20 foot commercial boat that gets used almost daily. It will run fine for days and all of a sudden I turn it over in the morning and bang....there was the sound of...
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