Carb tune up colortune 240z | The Z Club of Great Britain
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Carb tune up colortune 240z

Discussion in '240Z / 260Z / 280Z' started by datsunnyit, Aug 21, 2016.

  1. datsunnyit

    datsunnyit Well-Known Forum User

    Hi all , what is the correct model of ColorTune for Datsun 240Z ? you have tips on use ?
    Thank you
  2. jonbills

    ZClub Administrator
    Staff Member Moderator

    Hi, correct model would be one with the correct thread - don't think there's much more to it than that.
    I have one and it's very helpful in setting the idle mixture. I tend to find where the burn is yellow, then go leaner until there's no more yellow and then a bit further.
  3. nospark

    nospark Well-Known Forum User

    Gunson Colortune "G4074 for vehicles with 14mm spark plug" works for me.

    Jon, your leaner approach is interesting (yellow approaching white). At idle I've I've gone for the blue approaching yellow at revs. Might try a leaner mix setting as you suggest

    Don't wish to hijack the thread but the OP question has been answered

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