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    Compression issues on merc

    Hello all, I have a 87 merc V6 135hp black max. Recently i was on the water and my power dropped down a thousand rpm. I believed at that point I lost a cylinder, went to shore and loaded up the boat. So when i got home i decided to do a compression test. All was good until i...
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    1987 mercury black max 135hp power loss question

    Hello all, I have a merc black max V6 135hp outboard. When i first take it out on the lake it runs beautiful and smooth at about 5000 rpm WOT. after about 45 mins, it wont go over about 3000 rpm and starts running rough if I push it, but runs just fine at 3000 rpm. So i got...
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    1987 mercury black max 135 hp rectifier wiring question

    Hello all, So i know that rectifiers have been beat to death. I have read the forums. So let me just start here. I bought a used boat, 1981 Deltacraft 170 xlt with a nice running 1987 mercury black max 135hp outboard engine. The tach was not reading. So after reading forums i discovered that the...
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