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  1. K

    1985 25XD intermittent spark

    On start up sometimes neither cylinder sparks but usually I can get it to limp along on one cylinder for a few seconds or even a minute or two before the other cylinders gets spark and suddenly surges to life. This only happens on cold starts. It will start easy the rest of the day. On rare...
  2. K

    1985 25XD Intermittent start problem

    1985 25XD usually starts fine but every few mornings I can (after pulling my arm out of socket) get it to fire on one cylinder only. If I manage to keep it chugging along on one cylinder for two or three minutes the other cylinder will finally fire and it immediately runs fine the rest of the...
  3. K

    25hp XD shift linkage disconnect?

    The Big Brown Truck should deliver my water pump kit (1985 Merc 25hp XD) from iboats today. I?ve read through a couple tutorials on how to drop the lower unit and it all looks fairly simple but I?m still a little sketchy on disconnecting the shift linkage. One said there is a C clip to...
  4. K

    25XD fuel starvation at full throttle

    I have an 84/85 25XD Merc that runs out of fuel at full throttle. If I?m quick (before it dies) I can chop it down to ? or ? throttle. The fuel bowl will slowly refill and I can floor board it again till it runs low. I suspected leaky fuel lines and have tried new lines, new bulbs, new...
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