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    SEDS (Sudden Engine Death Syndrome)

    I have a 1976 120 Mercruiser. It starts OK, runs rough while warming up but smooths out as the choke opens. Just when it starts to get warm it shudders and dies. This started a few weeks ago. At that time I was able to run upstream to a fuel pump and it ran fine, but one the way home I tried to...
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    What's this little fitting for on my new fuel pump?

    The fuel pump on my old (1976) Mercruiser 120 gave out and I got a new one. The new one looks identical except for two things: it's not black and it has this little mystery fitting on the bottom. I have some black paint, so that's not a problem. But what do I connect this third fitting to? The...
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    Changing hydraulic lines on 1975 120HP Merc.

    When I bought the boat last spring I saw a lot of nice shiny new hydraulic lines inside and out. But I didn't notice the two remaining ones that had not been replaced. These both blew out this summer, resulting in much embarrassment, though no damage. It is difficult to maneuver when the prop is...
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