Jetting when cold

Discussion in 'Carburetor' started by lucknuts, Nov 10, 2019.

  1. lucknuts

    lucknuts Member

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    In the low 20’s 30’s now. You lower the jet size when colder correct. Not higher jet sizes? Running a blank tonight.
     
  2. Slydog

    Slydog Member

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    Cold air= more air so you would need more fuel.
     
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  3. Slydog

    Slydog Member

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    Dam that's cold 70s here
     
  4. lucknuts

    lucknuts Member

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    wisconsin. Where we every temperature within a week. Hahaha
     
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  5. Slydog

    Slydog Member

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    That's hardcore if you're jetting for those temps.
     
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  6. Awk08

    Awk08 Administrator Staff Member Technician

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    I jump up 2 sizes on the main jet for temps in the 50's to 30's degrees, < under that I ride the couch :)
    adjust your airscrew in a little too so it idles good
     
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  7. Larry's Shee

    Larry's Shee Active Member

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    One jet size for every 20* colder from perfect summer jetting.
    Be aware you can cold seize if you run hard like ice racing.
    Think wind chill. Some cardboard to keep the air from directly hitting cylinder/head.
     

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