FD620D running rich I think...
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Thread: FD620D running rich I think...

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    FD620D running rich I think...

    Because it is Fuel injected, how would I go about leaning it out a little?


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    TJR345's Avatar
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    That I don't know but you might want to check the plugs and coils.If your getting a poor spark it will act like that.
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    Tom

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    Quote Originally Posted by TJR345 View Post
    That I don't know but you might want to check the plugs and coils.If your getting a poor spark it will act like that.
    Will do. My plan is the check the plugs today, just was letting it warm up a little outside first. I will post a picture.


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    Zebrafive's Avatar
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    A dirty air filter will also cause running rich. I mean real dirty, enough to choke air flow below what is needed.
    J
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    The air filter is new clean. I also have Gx345 with an 20hp FD611v. I have that engine tuned nicely!! It is much more throttle responsive, and “seems” to generate more Horsepower. I have an RPM meter arriving today, so I will compare the two. Like I said, I think the FD620D is running on the rich side especially compared to the Fd611v.


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    Guess what?? The little silver bare spot was my entire problem. It was periodically causing a short against the aluminum block, therefor the engine was only running on one cylinder at times.


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    TJR345's Avatar
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    Glad to here you found the problem.
    Tom

    2019 X590 with power mulch control and PF bagger
    30" mechanical tiller
    02 X595 with 62" deck,front thatcher and powerflow PTO kit
    3pt hitch with Heavy Hitch 45 JD loader
    12 JD suitcase weights
    JD/Brinly 3pt plow
    Frontier SS1036 3pt pto spreader
    (2) JS63C walk behind mowers
    TS 105 JD weed wacker
    tow behind 15 gal. sprayer
    Turftime 60" lawn roller
    Turftime 54" 3pt core aerator

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