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Recent content by mmac

  1. M

    1987 Mercury 2-stroke won't start

    Hello. Replaced CDI as suggested with a Sierra brand replacement. Still have #2 spark very inconsistent. #1 sparks every pull. This string is getting long and would not expect anyone to completely follow it. Working with this spark recap: #2 cylinder did not have spark. I am certain it did in...
  2. M

    1987 Mercury 2-stroke won't start

    Thanks Racerone. Plug wires were switched between cylinders and then replaced. Again, I am not an outboard expert, (as this has proven). With a strong #1 spark, and what I think is an intermittent #2 spark, shouldn't the engine fire, maybe run rough? When plugs are inspected after attempts to...
  3. M

    1987 Mercury 2-stroke won't start

    Hello again. August got busy and did not have time until recently to mess with this. Did as Racerone suggested. 6 drops for fuel in each cylinder. Backfired through exhaust in 6-7 pulls. Another 6-7 pulls backfired through exhaust again. Then nothing. I am mechanical but admit no 2-stroke...
  4. M

    1987 Mercury 2-stroke won't start

    Yes, square button pulled out and left out. When it is pulled out it advances throttle and timing trigger for fast idle. (although it does not start) I am concerned if it is advancing timing correctly. I have not found a measurement for timing link rod to check "static" timing. This motor has...
  5. M

    1987 Mercury 2-stroke won't start

    25 HP Serial B172536. Flywheel is keyed correctly. Plugs were replaced with new ones. I have a manual giving details on setting timing at idle and WOT. However not sure how to check the base timing prior to start. Pull start so not sure how to check timing prior to it running. I did check and...
  6. M

    1987 Mercury 2-stroke won't start

    Bought this used. Ran but not great. Rebuilt carb. Fuel pump on side of carb. Won't start. Occasional backfire out exhaust. Good compression. Spark at plugs. New stater and trigger. This model has primer and it does spray fuel. I suspect a timing issue however it is a pull start. Not sure where...
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