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  1. M

    Spark plug fouling

    I have a 2000 90 horse mercury on a 21 foot pontoon and i do alot of trolling. My question is after trolling for a while the plugs load up and foul and i was wondering if i could be injecting to much oil. I have been told i could take the oil injection out of the equation and just start mixing...
  2. M

    90 Horse merc with issues

    I'm having issues. When i first start and run the motor it runs fine, but after about a hour or so trolling and go to another spot it will only get 2000 RPM. I checked the plugs and they look fouled, but not really sure. Clean the plugs and run the motor and it runs fine until i troll for about...
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