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3.4L pings under heavy acceleration

Discussion in '1st Gen. Tacomas (1995-2004)' started by Kiloyard, Nov 26, 2017.

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  1. Nov 26, 2017 at 12:49 PM
    #1
    Kiloyard

    Kiloyard [OP] Road Warrior

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    John
    Phoenix, AZ
    Vehicle:
    1999 3.4L SR5 4X4 380k miles
    Toytec Boss/Eibach Coils & Deaver J59's
    I just changed my spark plugs and wires yesterday. Engine sounded perfect prior to the project, now it pings under heavy acceleration.

    I have the OEM Denso spark plugs in there, but it was my first time changing them myself so I could have made a mistake. Any ideas?
     
  2. Nov 26, 2017 at 2:29 PM
    #2
    TacomaJunkie8691

    TacomaJunkie8691 1999WineTacoma

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    FrstGenTacomaLover
    WA State
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    1999 Wine Tacoma SR5 Exta-Cab 4wd V6
    Completely Stock except for Ranch 5000 Shocks and Struts.
    Dear John,

    Sorry to hear you have a ping after changing out your spark plugs. The spark plugs that mot of the Tacoma World members prefer are the dual electrode Nippondenso model number K16TR11, or the dual electrode NGK model number BKR5EKB-11. The spark plugs also need to be set to a 1.1 millimeter gap. Unfortunately, I don't know enough about Denso plugs to give you an opinion as to whether or not they could be the culprit of your annoying ping under heavy acceleration. Obviously, you did something yesterday when you changed out the plugs to cause the problem since you did not have the problem before you started the project.

    Good Luck,
    Paul
     
  3. Nov 26, 2017 at 2:38 PM
    #3
    Kiloyard

    Kiloyard [OP] Road Warrior

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    John
    Phoenix, AZ
    Vehicle:
    1999 3.4L SR5 4X4 380k miles
    Toytec Boss/Eibach Coils & Deaver J59's
    I may have to take it in to a shop to have them troubleshoot.
     
  4. Nov 26, 2017 at 8:28 PM
    #4
    Glamisman

    Glamisman Well-Known Member

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    look at the receipt for the plugs you bought or pull one and tell us what you put in... certain plugs have what is called a projected tip and this will cause pre-ignition.

    you can put the old ones back in a see if it goes away too... yah a bit of work but if you want to know for sure.
     
    TacomaJunkie8691 likes this.
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