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Tohatsu 4 stroke 9.8 exhaust just got a lot louder

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  • Sailordog
    started a topic Tohatsu 4 stroke 9.8 exhaust just got a lot louder

    Tohatsu 4 stroke 9.8 exhaust just got a lot louder

    Hello all, my 2009 4 stroke Tohatsu ( MFS9.8A3) exhaust just got a lot louder, as in if it was my car I’d be looking for a hole in the exhaust pipe. It still runs normally, no chocolate milk in the oil, and nothing I can detect as an exhaust leak in the engine compartment. I still get exhaust out of the above water port along it a normal water telltale and thru prop exhaust .
    problem is same whether engine is cold or hot.
    any help with idas are most appreciated.

  • Sailordog
    replied
    Great ideas, I’ll give them a shot.
    yes, salt water - sorta, upper Chesapeake
    thanks to everyone

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  • raczekp1
    replied
    salt water motor?

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  • Sea Rider
    replied
    With use and heat all gaskets will cede in a bit, adjust tight with wrench all the bolts located under the pan, if bit lose exhaust will be heard louder than when factory delivered, check.

    Happy Boating

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  • pvanv
    replied
    Verify the timing. You can use a timing light. If the gear belt jumper a tooth, the valves could be opening late.

    Leave a comment:

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