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  1. M

    Yamaha 90HP 4 stroke Rough idle and cuts out above 5000 RPMs - Help Needed

    My 90HP EFI 4 stroke (2006) has a rough idle - until about 1,100 RPMs and will then operate normally through about 5,000 RPMs at which it will cut out as if it is starving for fuel. No issues seem are obvious between 2,000 and 4,500 RPMs. Trying to get my head around where to start in order to...
  2. M

    Rough Idle F90 4 Stroke EFI

    I have a 2006 F90 4 Stroke EFI that runs rough at neutral idle (900 RPMs), it will stumble and rebound without stalling. It seems like the ECU is compensating for something. It continues to slightly fluctuate even if I increase the throttle in neutral. Maybe thinking the idle control could be...
  3. M

    Lost Power Steering in Pontoon Boat

    Had my newly acquired pontoon boat (2005 Bennington 25' w Yamaha 90hp 4 Stroke) out for a short evening run tonight. I lost my power steering just as I was pulling in and all I hear is a clicking coming from the helm steering now. The motor is stuck all the way to the left. Any advice would...
  4. M

    F90 Yamaha 4 Stroke EFI 2006 Rebuild

    I purchased a 2006 Yamaha F90TLR EFI 4 Stroke with 25' Pontoon, The Engine had thrown a Rod from being overheating prior to my purchase so I replaced it with a new short block from Yamaha I have just started breaking it in. The Head also needed a little work at the machine shop with the valves...
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