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EFI timing

Discussion in 'The Garage' started by MTBLAZER89, Oct 6, 2003.

  1. MTBLAZER89

    MTBLAZER89 3/4 ton status GMOTM Winner

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    Ok I just got done reading the benefits to advancing timing on EFI motors, and I have a question. I finally got a timing light and checked mine. Is it normal for the SES light to come on with the tan wire diconnected?? The numbers on my marker are pretty unreadable so I guessed anyway I advanced it a notch and all my problems are GONE. rough idle no power bouncing tach all gone. Trucks runs like it's new wooohoooo. It'll even burn out now. Anyway sorry so long just wondering if the light comes on for everybody else?
     
  2. K5Dan

    K5Dan 1/2 ton status

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    yes it's supposed to come on. /forums/images/graemlins/thumb.gif
     
  3. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    Yes on the light.

    How far did ya advance it?

    Mine's about 2+ and it runs pretty good.
     

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