Re: Mid 50’s Johnson 25HP runs like crap. Advice needed

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May 15, 2018 at 4:04 am #76001
david-bartlett
Participant

    Bill,

    That is smoking a lot. Due to running very rich, and with the choke partially closed. You said carb was clean? Did you take the welch plug out and check the low speed area?

    If it has to run with the choke, there is a fuel delivery issue there somewhere.

    With 110 psi compression, it should run and idle fine.

    Fuel filter plugged up?