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Thread: Spark Knock (2016 66.000mi)

  1. #1
    Registered Member


    Join Date
    Aug 2019
    Posts
    1

    Spark Knock (2016 66.000mi)

    Hi, just like the title says I've got spark knock. I came to this forum with this problem at 35,000k miles and now the issue is back and I'm wondering if anyone else is having this problem. I specifically hear the knock at about 3200rpm in sport mode. I've switched to mid grade gas and the problem persists.

    My preferred dealer says there are two valve cleaning options available. One is a solution that is administered through the manifold and the other involves removing the cover and scrubbing the valves and cylinders with a brush.

  2. #2
    Registered Member bulwnkl's Avatar

    (former) 2006 Mazda 5 M/T

    Join Date
    Jan 2006
    Location
    Arizona
    Posts
    355
    Nope, not having that problem. If the knock is knock, and if that*s being caused by carbon buildup, then a product like Red Line SI-1, Chevron Techron, or a CRC product whose name escapes me would be good, inexpensive options.
    | That the yielding conquers the resistant
    | and the soft conquers the hard
    | is a fact known by all people,
    | yet utilized by none.
    | -- Lao Tzu

  3. #3
    Registered Member DrFeelGood's Avatar

    Mazda 6s Wagon

    Join Date
    Oct 2017
    Location
    Portland, OR
    Posts
    17
    I would run a tank of premium grade. Perhaps cycling the ECU (disconnect battery for 1 min) and allowing the car to relearn with the higher grade fuel.
    DO you drive mostly city (stop and go)?

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