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  1. M

    Boat, Engine, or Prop?

    I am posting this in the engine section because it "could" be engine related..... I am chasing down a WOT low rpm issue. My boat is a 1998 Stingray 220DS (Deck) boat. It is about 4300lbs dry. I have a 1997 5.7 LX with an 1.47 ratio Alpha 1. I am currently running a Quicksilver 4 blade 17p...
  2. M

    1997 Merc 5.7LX Knock Sensor tshooting

    I have a 1997 Merc 5.7LX with Tbolt V and the knock sensor. I have been chasing a WOT issue since I have had the boat (6 years). The boat basically will hit 4000-4300 rpm's regardless of prop pitch. I am running a 17 pitch now. This is a 22 ft. bowrider. I have always suspected timing...
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