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Dropped RPMS

Discussion in 'Post Yacht' started by bradlangdon, May 3, 2026 at 1:43 PM.

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  1. bradlangdon, May 3, 2026 at 1:43 PM
    #1
    bradlangdon

    bradlangdon New Member

    Joined:
    Jul 12, 2025
    Messages:
    23
    Location:
    510 SW South Carolina Drive, Stuart
    1989 43 with 671 TIB's, I have seen it turn both 2400-2450. Bottom was inspected and cleaned and props look good. I have dropped down to 2100 on both engines at WOT, speed is way off of course as well, very little black smoke even when I get on the throttles heavy. One puff of smoke and it goes away at one second and then only hits 2100 on both. I just changed the primaries and secondaries, also removed air filters and cleaned them. In neutral , I am seeing 2575-2600 dead racking in neutral. Can anyone provide me with any potential issues that I have not thought of yet? Your help as always is very much appreciated.