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  1. Shadoprizm

    Rough Idle After Decarbinization

    2 days ago I completed a Seafoam shock treatment on my 89 Johnson GT100. The treatment seemed to go well and the engine was idling steady at around 800RPM after burning roughly 1.5 Gal of Seafoam/Gas/Oil mixture. A few hours later, I noticed a puddle of gray sludge which leaked from exhaust -...
  2. Shadoprizm

    Trim Slipping on 89 Johnson 100

    A little background - I picked up this boat several weeks ago and I am unaware of the history, therefore I am not certain how long this issue has existed. As alluded to in the title, I can trim the engine up with no problem but it then rapidly slips back down after releasing the trim switch. My...
  3. Shadoprizm

    Warning Horn Constantly On When Key Turned

    Hey everyone - as the title states, the warning alarm is on constantly when I turn my key. However the issue is intermittent, sometimes it doesn't happen but most of the times it does. Some background - the outboard is a 89 Johnson 100GT. The issue seems to have begun when I reconnected the...
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