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    charging system voltage regulator

    Hello i have a 87 mercury xr2 150hp black max. I need info on where to hook up the two wire voltage regulator i can find wiribg diagram for it anywhere. The voltage regulator has two brass bolts for a two wire lead to attach (red and a yellow) wire. Any help would be great thank. The engine...
  2. C

    Mercury black max 150hp v-6 piston issue

    HELLO. I had a piston come apart while under full throttle. made some noise that went away. noticed horrible performance so I compression tested the engine and found a piston had a failure. damaged the cylinder wall. i removed the head and took this picture. its only one cylinder. i have heard...
  3. C

    mercury black max xr2 losing one cyl spark at about 2200 rpm

    hello all, I have a mercury black max 150hp v-6 xr2. it runs well at idle and also at full speed, however when accelerating it looses spark to the number 5 cylinder only. I tried switching the coil with another and also swapped the power pack, problem is still on the number 5 cyl. im using a...
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