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Honda 150 surges over 3500rpm

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  • Honda 150 surges over 3500rpm

    Have twin 150hp, 2004, and only have problem in 1 engine. Replaced racor filters and both fuel filters on both engines after the surging started. Helped for about 3 hours running time and then surging returned. If I keep the engine below 3500 rpm it runs fine most of the time with only very intermittent surging. What should I do next?

  • #2
    May need to remove and clean VST and recheck fuel filters.
    Regards
    Boats.net
    Honda Outboard Parts

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    • #3
      Is there a screen in there as well?

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      • #4
        Yes filter on pump and filter on outlet.
        Regards
        Boats.net
        Honda Outboard Parts

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        • #5
          Do you have the part numbers for the filter and screens and anything else for this job?

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          • #6
            2004 BF150A4 XA Honda Outboard VAPOR SEPARATOR ASSY. Diagram and Parts
            Regards
            Boats.net
            Honda Outboard Parts

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            • #7
              replaced the filter, ran great for 10 minutes, then the surging over 3500rpm returned. now what?

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              • #8
                Need to monitor fuel pressure to see if loosing pressure.
                Regards
                Boats.net
                Honda Outboard Parts

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