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Thread: Spirit R/T smoking under deceleration

  1. #1
    Hybrid booster
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    Spirit R/T smoking under deceleration

    1991 Spirit R/T. Stock turbo and engine. Doesn't smoke upon start up or while idling. Tried to pin point when smoking and seems to be doing it after accelerating and then backing off. Doesn't seem to be smoking while just cruising at a steady speed. Haven't checked plugs yet.

  2. #2
    Supporting Member II Turbo Mopar Contributor
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    Re: Spirit R/T smoking under deceleration

    So bad under boost? and high vacuum?
    Turbo bearing leaking?
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
    '87 CSX #432

  3. #3
    Hybrid booster
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    Re: Spirit R/T smoking under deceleration

    No one else have input?

  4. #4
    boostaholic
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    Re: Spirit R/T smoking under deceleration

    When you say after accelerating, is this after going into boost?

  5. #5
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    Re: Spirit R/T smoking under deceleration

    Quote Originally Posted by DoubleD View Post
    When you say after accelerating, is this after going into boost?
    Yessir

  6. #6
    Supporting Member II Turbo Mopar Contributor ajakeski's Avatar
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    Re: Spirit R/T smoking under deceleration

    Turbine shaft seal is leaking.

  7. #7
    boostaholic
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    Re: Spirit R/T smoking under deceleration

    I will second that, sounds like turbo seals. Time for a rebuild

  8. #8
    Hybrid booster
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    Re: Spirit R/T smoking under deceleration

    Thanks fellas.

  9. #9
    Supporting Member II Turbo Mopar Contributor
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    Re: Spirit R/T smoking under deceleration

    not a problem,,,good luck
    Regards,
    Miles

    DD '87 Sundance T1, 12PSI, SLH with rear disks
    '87 CSX #432

  10. #10
    Supporting Member II Turbo Mopar Contributor Dr. Johny Dodge's Avatar
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    Re: Spirit R/T smoking under deceleration

    smokes at start up and when decelerating is classic bad valve stem seals

    smokes out the entire intersection stopping traffic from all directions after you drive away is either a lifted head gasket or a bad turbo

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