MediaRelease: captiva z20s1 diesel knock and long start after engine rollover




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  1. #1
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    Unhappy captiva z20s1 diesel knock and long start after engine rollover

    Hi Members

    hope you are all well

    I overhauled the engine of my chevy captiva 2l diesel z20s1 and now it has a diesel knock before start and it take too long to start.
    I asked GM mechanic and he advise that the injectors where mixed I should take it to GM Workshop so that they can reprogram them or swap them accordingly.

    Please advise as I don't want to book it in then end up being charged for something else or new engine.

    The car can drive but it doesn't have power is not kicking the turbo.

    I will really appreciate you technical expertise

    Kind Regards
    Sepeke
    Last edited by mancane333; 2018/11/12 at 01:48 PM.

  2. #2
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    Default Re: captiva z20s1 diesel knock and long start after engine rollover

    Sorry but rolled over as in you crashed the car and it rolled over
    or overhauled as in you had the engine rebuilt?
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  3. #3
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    Default Re: captiva z20s1 diesel knock and long start after engine rollover

    Quote Originally Posted by Stephan van Tonder View Post
    Sorry but rolled over as in you crashed the car and it rolled over
    or overhauled as in you had the engine rebuilt?
    That's what I'm also wondering, op what happened to the engine before this issue cropped up?

  4. #4
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    Post Re: captiva z20s1 diesel knock and long start after engine rollover

    Quote Originally Posted by Stephan van Tonder View Post
    Sorry but rolled over as in you crashed the car and it rolled over
    or overhauled as in you had the engine rebuilt?

    Sorry Overhauled. thanks for the correctiong

  5. #5
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    Default Re: captiva z20s1 diesel knock and long start after engine rollover

    Quote Originally Posted by mancane333 View Post
    Sorry Overhauled. thanks for the correctiong
    How much did that cost and how long ago was it done?

  6. #6
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    Default Re: captiva z20s1 diesel knock and long start after engine rollover

    The GM technician is correct: most injectors are coded and have to be reinstalled in the same sequence or they need to attach a factory diagnostic computer and get the ECU to rediscover and calibrate each injector.
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  8. #7
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    Default Re: captiva z20s1 diesel knock and long start after engine rollover

    Quote Originally Posted by Skylark View Post
    That's what I'm also wondering, op what happened to the engine before this issue cropped up?
    Answer: The air-con pipe bust and the water leaked while I was driving heavy at mid-night.

  9. #8
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    Default Re: captiva z20s1 diesel knock and long start after engine rollover

    Quote Originally Posted by mancane333 View Post
    Answer: The air-con pipe bust and the water leaked while I was driving heavy at mid-night.
    an aircon pipe won't break an engine

    surely a radiator pipe?

    Surely the Captiva has a coolant level sensor and a coolant temp sensor?
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