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Thread: Engine running rough cannot set mixture

  1. #21
    EFI'd dn010's Avatar
    Join Date:  Jul 2011

    Location:  Florida: Pinellas County

    Posts:    1,957

    My VIN:    5003

    Club(s):   (DCF)

    Did you check to be sure the three brass screws are fully seated/closed?
    -----Dan B.

  2. #22
    Member Dhennick99's Avatar
    Join Date:  Jun 2011

    Posts:    36

    Quote Originally Posted by dn010 View Post
    Did you check to be sure the three brass screws are fully seated/closed?
    No, where are those located? Can you reply with a photo?

    I've attached a photo of the wide needle swing I'm getting on the dwell meter. Any ideas as to how I might remedy this?

    https://youtu.be/v_fyilPK32A

  3. #23
    Senior Member
    Join Date:  May 2011

    Posts:    175

    My VIN:    02855

    Club(s):   (NCDMC) (DCUK)

    Quote Originally Posted by Dhennick99 View Post
    No, where are those located? Can you reply with a photo?

    I've attached a photo of the wide needle swing I'm getting on the dwell meter. Any ideas as to how I might remedy this?

    https://youtu.be/v_fyilPK32A

    is the car fully warmed up in this video?

  4. #24
    Delorean Guru
    Join Date:  May 2011

    Location:  Northern NJ

    Posts:    7,861

    My VIN:    10757 1st place Concourse 1998

    Things that can affect the dwell;
    Idle speed
    Vacuum leaks
    Contaminated O2 sensor
    Worn ignition system
    Dirty, leaky, bad pattern fuel injectors
    David Teitelbaum

  5. #25
    Senior Member
    Join Date:  Jan 2019

    Posts:    119

    Iím picking the injectors are dirty. Unless all spray an equal volume and spray pattern the ECU will chase itís tail all over the place.

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