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    Can interior trim hoses be changed w/o pulling block?

    Is it possible to replace the power trim/tilt hoses inside the boat without pulling the motor? I have not had any luck seeing where they attach to the sterndrive unit, but I assume they attach below the driveshaft to the inside of the transom plate. I also assume if I had long enough arms, I...
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    Cracked a Thrust Washer - How did I get so strong?

    I was installing the prop on my 150HP Inline Merc. As I tightened the prop with a standard prop wrench, the thrust washer split in two pieces. Now, I'm not too strong, and didn't pull too hard on the wrench. What in the heck happened? Do they get brittle with age (or saltwater)?
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    Center Electrode burned away

    Folks, I started my '88 4.3LX, and it ran poorly. Just for fun I pulled the spark plugs I had installed last summer and looked them over. Several had rounded electrode straps, and one was missing at least 3/16 of its center electrode. It appeared to be burned away. I replaced them, and the...
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    Rapture or Stiletto - a SS Prop question

    Which of these are the best for my boat, or is another brand better? I'm running a Merc inline 6, 150HP motor on a 16' Avenger speedboat. Boat has a shallow V bottom, and a jackplate. Boat, motor and driver (and gear) weigh about 1300#. I get 58-6000RPM (54MPH)with an old, worn 19" pitch...
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    Color fishfinders - is it hype?

    I saw a color FF on a charter boat. The color display made it easy to determine what was structure, bottom and fish. Of course this was an expensive commercial device. Color FF have come down in price to $600 (more or less). The ones I have looked at in stores (in simulation mode) seem to...
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    Oil Injection into intake manifold on outboards

    My 1973 2 cycle 7 port loop charged motorcycle engine had very reliable oil injection. It consisted of a crankshaft-driven, variable stroke pump. The throttle setting controlled the pump stroke, and the engine speed controlled the pump speed. The oil was pumped into a banjo fitting on the...
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    Are carbed I/O motors preferred by mechanics?

    Had a discussion with some boat lovers New Years Eve. (We were all sober, BTW. :D ) They told me that some marine mechanics refuse to work on the fuel injected Mercruiser motors. They consider them too complex and unreliable.<br /><br />The question is has anyone else heard this? Also, can...
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    Another leaking oil filter!

    Folks, The oil filter on my Mercruiser rusted through for the second time in three years. This time I didn't notice it right away and it dumped 2+ quarts of oil in the bilge. What a mess!<br /><br />Since this has now happened twice, I wonder, does it happen to anyone else on this forum...
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    Hull Separation Problems Too?

    I read the previous post about difficulty separating the deck from the hull. I have a 16' low profile speedboat. It has a 1/2" by 1/8" - half round solid aluminum rub rail held on by rivets. It also appears that the rub rail does not cover a joint, between the deck and hull. It is possible...
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    What year is the Merc Powerhead

    I purchased a rebuilt powerhead for my 150HP inline six. The "new" powerhead has 12 point, 3/16" connecting rod screws, rather than the bolt and lock nuts on the original powerhead from 1977. I suspect that the rebuilt powerhead may be older in vintage. Also, on the rebuilt powerhead, the...
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    Lets break 'em both

    I live on the bay in NJ. Several years ago I had an old runabout as well as my speedboat. My runabout had a nasty habit of developing a no spark condition after I was out running around the bay for about 10 minutes. Now I have had this problem for a couple of weeks, and have made some...
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    I need to identify a Mercury Prop 48-77349 A40 21P

    I got this prop in a trade. I have been unable to identify it. It would appear to be a standard aluminum 21 pitch Mercury prop, but the part number is 1 number off. Is it maybe an "extra Cup" 21P Merc Prop?
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    Does the intake manifold on a 4.3LX V-6 seal the water jacket

    Folks, It looks like I may need to replace the intake manifold on my 4.3L V-6. Does the raw water cooling system come in contact with either the manifold itself, or its bolts. I am concerned about corrosion on these bolts when I go to replace it.
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    4.3LX -Alpha 1 overheats at idle only

    My 1988 4.3LX Mercruiser overheats only at idle. This occurs while in neutral or while in gear. As soon as RPM exceeds 1000 in gear, motor cools off. I recently needed to change the circulating pump pully from the old rotted out (discontinued) 5 1/2" model to the new 7" model. I realize this...
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    Biocide for Gasoline?

    I have seen a "Biocide/ anti-fungal" intended for use in gasoline, at a local marine store. I have heard of it for diesel, but never for gas. Is it "Snake oil", or does it have some utility :confused: ?
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    Seafoam for an I/O

    I happened to notice Seafoam in the local auto parts store. I have heard many folks swear by it use to decarbonize outboard engines. Will it provide any benefit to my Mercuriser 4.3LX motor? I have a lot of time on it, but it runs well and has good power.
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    Is there a good Bow-lifting Prop?

    I looking for the subject for my 1977 inline 150HP Merc. My boat runs fairly flat at high speed with a standard Merc 3 blade prop(12-3/4 X 19-21 pitch), and I think more bowlift would allow higher top speed. However, I need good holeshot, for water skiing. Is there a prop that had both good...
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    As close as you can come to sinking!

    Many years ago I was out in Raritan Bay NJ near the ammunition pier, in my 14' runabout. Now I know that it gets real rough there in the afternoon (4' waves), but at the time I was ignorant. We stopped to fish, and took several waves over the transom in rapid succession. Since we were about...
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    Am I on fire? Do I jump?

    Some years ago I was out on an inland bay near Atlantic City NJ. It was rough and I was bouncing around in my speedboat. All of a sudden smoke starts pouring (I mean really pouring) out of the gunnel behind the drivers armrest. Since I am sitting next to it and I know the fuel line and some...
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    Whoa where did it go?

    I was given a old 16 foot runabout. Merc Motor was run w/o oil twice and w/o grease in the gearcase, therefore it was shot and I removed it. So I went into the shed and dragged out my old '59 50HP Johnson. Those of you who remember, this is a 70.7 CU Inch V4, about 220 # of low performance...
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