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  1. M

    Mercury 175 1997 noise Help!!

    Cruising at a consistent speed and right around 3500 rpm noise is there. But if I tip on or off the throttle to up or lessen the load noise goes away. I would say it does it at 30% load area. don't notice any performance changes so I don't think it's a misfire. No work done to it recently. I...
  2. M

    Mercury 175 1997 noise Help!!

    I'll add when I spin it over by hand I notice no rough spots that I can feel by hand.
  3. M

    Mercury 175 1997 noise Help!!

    Anyone have any insight on this noise. Started the other day out of nowhere and only happens around 3500 ish rpm at a low engine load. As soon as you tip into the throttle or back off nosie goes away. Sounds loudest by the stator end of the engine. And possibly carb side of the engine. When my...
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