• Creator
    Topic
  • #33120

    Kenneth Athans
    Participant
    Vessel Name: Hikina Koa
    Engines: Yanmar 4LHA STE
    Location: Oahu
    Country: USA

    My port engine is struggling getting past 1800 RPMs as I increase speed to get up on plane. It seems to lag behind the starboard engine by 400-600 rpms and eventually catches up with the starboard engine to get up on plane and max RPMs.

    Any suggestions on where to start?

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  • #33124

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Post history of all past use and past operation over the last few years operation..

    Exact boat model?

    Max RPM in neutral?

    Max RPM in gear?

    Typical Cruise RPM?

    Tony

    #33121

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    Start with good pictures of both engines, especially to include the turbos and exhaust setup, and then we’ll go from there.

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