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Thread: help 76 280z running rich

  1. #1
    Registered User
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    Default help 76 280z running rich

    I have replaced the fuel regulator, air flow meter, temp sensor and car is still burning up all 6 plugs. Car is currently at Nissan dealer and their don't have a clue. Any suggestion would greatly be appreciated.
    Ken

  2. #2
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    Default

    Replace the ECU.

  3. #3
    Registered User webdawg1's Avatar
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    Have you downloaded the EFI bible? Will probably help you out some...Having the FSM (Factory Service Manual) for your model year will also help out quite a bit, as the EFI bible makes reference to various sections, page numbers, procedures...etc...etc. You can get the EFI bible at the following url:

    http://www.72hours.net/~zcar


    webdawg1

  4. #4
    CraZZZy about Z's DatsunZsRule's Avatar
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    Default

    The best thing to do instead of playing the guessing game which is expensive would be to perform all of the test procedures at the 35 pin connector for the ECU which is listed in the FSM with a multimeter. performing these tests will get you pointed in the right direction to what the cause is.

    Thats my best suggestion. Hopefully you own a meter and a FSM
    Jared (1977 280Z - SOLD )

    "Any car can get you where you need to go. A special car gets you there with a smile on your face"

  5. #5
    1978 280Z (stock) TomoHawk's Avatar
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    Default

    Also check your spark timing, and make sure your coil is good.

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