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Thread: ZZ4 350 stutters on acceleration...cold weather?
          
   
   

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  1. #13
    63BoxNova's Avatar
    63BoxNova is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2006
    Location
    Franklin Square
    Car Year, Make, Model: 63 Chevy Nova
    Posts
    128

    Well I rushed home from work to take the car for a spin while it was still warm outside. The stutter was still there but less than the other day. So I decided to richen the mixture a bit by turning out the idle mixture screws. It helped quite a bit, but still not 100% (i tried turning them in first and the car immediately idled like crap). I guess its true that the car needs more fuel in cold weather? And I guess what HWORREL said about having exhaust warming the intake would make a big difference since it makes the car "immune" to the cold air outside.

    Are the idle mixture screws only for low rpm as the name implies, or does it have some effect on higher rpm as well?

    Thanks for all your input guys
    Last edited by 63BoxNova; 11-09-2006 at 04:34 PM.

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