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Help engine knocking

Discussion in '4 Cylinder' started by sccb7, Jun 12, 2012.

  1. Jun 12, 2012 at 10:05 PM
    #1
    sccb7

    sccb7 [OP] Member

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    My engine is knocking and I know it's coming from the head but I have no idea what's wrong
     
  2. Jun 12, 2012 at 10:11 PM
    #2
    sccb7

    sccb7 [OP] Member

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    97 toyota tacoma
     
  3. Jun 13, 2012 at 7:23 PM
    #3
    LDurchy

    LDurchy Well-Known Member

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    Perhaps blown head gasket, or cracked head.
     
  4. Jun 14, 2012 at 4:06 PM
    #4
    DGXR

    DGXR Well-Known Member

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    Any way you could post a sound byte or video? Anything else you can add to the description? Under what conditions does it knock, or knock the loudest?
     
  5. Jun 15, 2012 at 11:17 PM
    #5
    sccb7

    sccb7 [OP] Member

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    i replace the head gasket and shaved it.
     
  6. Jun 15, 2012 at 11:24 PM
    #6
    DGXR

    DGXR Well-Known Member

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    Shaving the head will increase the compression ratio. Not sure exactly how much, but it certainly explains your engine knocking. Try using a higher octane fuel and see what happens.
     
  7. Jun 16, 2012 at 11:43 PM
    #7
    sccb7

    sccb7 [OP] Member

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    3'' Skyjacker Lift, K&N Intake, 40 Series Flowmaster, All Pro UCA, Toytec Diff Drop and TG Rock Ripper Headers
    I did and I'm lil more then full oil and for now it stopped but I'm gonna wait till it comes back. Hopefully not but it's Not that bad cause my dads a mech and has a shop... I do, do everything myself.
     
  8. Jun 18, 2012 at 5:39 AM
    #8
    Steves104x4

    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    Run a fuel system cleaner to remove carbon deposits. Higher compession means you need higher octane fuel. You may have to buy a case of 104 octane boost.
     
  9. Sep 13, 2012 at 6:41 PM
    #9
    LDurchy

    LDurchy Well-Known Member

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    In Hawaii, not much altitude. Shaved head will add to issue with higher compression. First, I would try getting rid of carbon, then if it persists, see about retarding the timing a smidge. A higher octane may be in your future.
     
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