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Recent content by Knightro

  1. K

    Need Spark Plug Advice! Champion QL78YC VS. L78C

    If you're still not sure or feel the question has not been answered, call Mecury. My gut says they'll steer you the book as what bullet noted above. I always try to stick w/OEM. Knowing the ramifications in being stuck on the water, I prefer to be risk averse and use parts in the service manual.
  2. K

    2004 Mercury Optimax 135 - High Temp Alarm

    Updated 10APR22: I went right to #5 first. I noticed the compressor temp sensor was in pretty bad shape. There was missing insulator material from the wires. I tried to move the wires away from the compressor housing thinking it was shorting out but it was still showing a "Faulty Sensor". I...
  3. K

    1998 merc 200hp constant alarm

    It would be helpful to understand which alarm you are referring to? There are many alarms on a boat, can you be more specific?
  4. K

    2004 Mercury Optimax 135 - High Temp Alarm

    Hello! Long time viewer, first time poster. I've spent a lot of time researching this issue and have not found a smoking gun per se. Hoping some folks can throw me a bone as I attempt to fix this issue on my own AND it will may give others a resource if they have the same issue as I share my...
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