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    Oil wet spark plug

    Hello, I have an old 25 Bertram with twin 4.3 L Mercruisers and Alpha I drives. This past summer I had exhaust manifolds go bad on the port motor and had severe water intrusion. I have replaced the manifolds and changed the oil several times. Now I am seeing some surging in the rpm's in the...
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    water in number 6 cylinder

    Ok, I have a 1998 mercruiser 4.3L v6 with a weber 4 barrell carb with Alpha I gen II drives. I discovered the leaking exhuast manifold by noticing surging of 200-400 rpm while running about 2 weeks ago. I checked all plugs after running and found #6 to have water on the plug. I pulled the...
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    rubber flappers in y pipe

    So I'm changing out my old 1 piece manifolds (1998 merc 4.3L v6) to the conventional style two piece manifold/riser set up. The flappers on the starboard y pipe are completely gone. The ones on the port y pipe look fine. Should I worry about the rubber flappers being lodged down in the y pipe...
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    exhaust manifold to elbow gasket & sealant

    Here's an easy one. I'm changing out the exhaust manifold/elbow and risers on a 1998 mercruiser 4.3L v6. I have a closed cooling system. On the square gasket in between the manifold and elbow do you need sealant. The merc manual says to use mercury loctite 510 sealant. I'm not sure about...
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    rusted out exhaust manifold

    I have a 1998 merc 4.3L v6 and alpha I drive. I noticed the rpm's were surging some. I checked the #5 and #6 spark plugs and the #6 was wet. I pulled the exhaust manifold and its completely shot. The oil on the dipstick looks lighter than normal (maybe just slightly milky). I ordered new...
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    adjusting lower shift cable - Alpha I

    I'm trying to adjust the lower shift cable on an alpha I drive (motor is mercruiser 4.3 L V6). The instructions say to manually shift (push in on lower shift cable) the drive into gear while some one spins the prop. I've got that down - the drive shifts fine into gear. The instructions say to...
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    shift lever adjustments

    Hello, I have an older (late 90's era), original commander series dual lever remote control. part # 88688A22. It seems as if the levers are out of adjustment. When in neutral both levers are even but one lever is in between clicked or locked position (ball inside unit is in between recessed...
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