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    Water in Oil, Merc 260

    Hey guys! Okay, so there are plenty of post regarding water in the oil in this forum. I downloaded (and printed out!) the Mercury Service Bulletin 2001-13 regarding water intrusion. But I figured I'd share my situation anyway . . . I bought an old boat. 1988 Sea Ray 230 Cuddy Cabin. It's...
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    Mercruiser Head Gasket Replacement?

    I have a MCM 3.0L s/n # L311511. Boat mechanic says I need a new head gasket. Here are the symptoms: 1. The fore-most cylinder (the one closest to the thermostat and furthest from the drive) rates about 60 psi on the compression gauge. All other cylinders rate 170 psi (+/- 5 psi). 2. Engine...
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    Mercruiser 3.0L engine noise

    Hey all: Yep, I've got a strange engine noise. I'd describe it as clanking or rattling, a metal against metal noise. I only happens at about 2200 rpm and higher, and only after the engine has been running for 10 to 15 mins. It honestly sounds like something is rattling on the exterior of the...
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