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Spark Plug Change Running Rough

Discussion in '4 Cylinder' started by george3, Sep 25, 2016.

  1. Sep 25, 2016 at 8:23 AM
    #1
    george3

    #1
    george3 [OP] Well-Known Member

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    Just changed the spark plugs now it's running rough - didn't gap plugs because I thought I read didn't have to and the point was too delicate. Took the MAF out but look very clean so just put it back in. Should I diconect the battery so it relearns - should I gap the plugs ?? Any reply appreciated
     
    george3, Sep 25, 2016
    #1
  2. Sep 25, 2016 at 8:34 AM
    #2
    ACEkraut

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    ACEkraut Well-Known Member

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    Gap the plugs.
     
    ACEkraut, Sep 25, 2016
    #2
  3. Sep 25, 2016 at 8:38 AM
    #3
    timothom

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    timothom Well-Known Member

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    You might have cracked one of the plugs when installing, or not got the coil on quite right...
     
    timothom, Sep 25, 2016
    #3
  4. Sep 25, 2016 at 8:39 AM
    #4
    Frogging

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    Frogging Well-Known Member

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    my first guess as well
     
    Frogging, Sep 25, 2016
    #4
  5. Sep 25, 2016 at 9:30 AM
    #5
    george3

    #5
    george3 [OP] Well-Known Member

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    Took it apart - was in too much of a hurry - left a coil wire plug off. Running smooth as silk now. Thanks for the replies.
     
    george3, Sep 25, 2016
    #5
    Mush Mouse and timothom like this.
  6. Sep 25, 2016 at 4:41 PM
    #6
    Mush Mouse

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    Mush Mouse Club Soda Not Seals

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    its a Toyota truck and that's all the modifications needed
    if they are iridiums plugs you do not gap them
     
    Mush Mouse, Sep 25, 2016
    #6

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