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    2001 7.4 MPI Vibration

    I am asking for any thoughts or suggestions on this vibration.<br /><br />First of all the engine is a 2001 Merc. 7.4 MPI BIII eng. sn OL644969. in a 2001 Bayliner 2655.<br /><br />This vibration started approximatly at 40 hr's. I first noticed it while cruising at about 3200 rpm's, this is a...
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