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loud warning bell followed by engine shudder

F5TROYNH
F5TROYNH Member Posts: 2 ✭
in Q&A
have a 2022 Sweetwater SBX with Yamaha 150hp.  GDY64344L122.  low hours (50.5).  took it out for a spin for the first time this season.  started flawlessly.  we moved at low rpm through a cove for a few minutes.  then suddenly, this loud, alarm bell, starts.  It's a continuous shrill sound coming from sounded like the throttle control area.  no warning lights or indicators to explain what it was.  only way to stop it was to kill the engine.  restarted, and after a few minutes, same sound begins again.  this time we noticed when we tried to accelerate beyond no wake speed, the engine would shudder until we backed off.  could this be bad gas?  fuel filter?  i looked in owner's manual and found no reference to this alarm bell sound.  any help would be appreciated.   it's practically new. 

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  • dfbett
    dfbett Member Posts: 2 ✭
    I recently purchased a used 2012 Aqua Patio with Yamaha 115 and have the same issue. Seemed to work fine for the first two times out. Filled the tank on the lake with Premium gas and wondering if I got bad gas? Did you discover the issue and could gas be the problem?
  • dfbett
    dfbett Member Posts: 2 ✭
    Problem solved. There is a water separator on the back of the boat and also on the back of the engine. There is a float in the engine fuel separator that rises to set off a sound alert when full of water. Empty both fuel/water separators on the back of the engine and the back of the boat and put sea foam in the gas tank to fix problem. 

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