What is this noise???!!!!

Discussion in 'Engine & Performance' started by AKBray907, Jan 12, 2013.

  1. AKBray907

    AKBray907 SUPER *********.

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    So my truck runs perfectly fine, no loss of power no anything. Stethoscopes it an the tick isn't coming from the bottom end, isn't coming from the passenger side valve cover only place you can hear it really is the timing chain cover an the exhaust manifold on the passenger side. I'm thinking either it's he timing chain tensioner somehow no getting enough pressure for worn out idk. Any ideas?? Here's a vid. Also only comes when warmed up but gets much quieter when put into gear an it goes away with throttle even in park

    Here's a vid
    http://i820.photobucket.com/albums/...1-9084-4A94DE8AD0AF-2812-000001D8BAF514F3.mp4
     
  2. AKBray907

    AKBray907 SUPER *********.

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    I think it echoes through the exhaust from the timing chain or cover
     
  3. iowaredneck

    iowaredneck Administrator

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    sounds like the chain is hitting the cover
     
  4. AKBray907

    AKBray907 SUPER *********.

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    Yea I'm thinking the tensioner is worn out so the chain has movement an is tapping the cover
     
  5. iowaredneck

    iowaredneck Administrator

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    I think you are right
     
  6. AKBray907

    AKBray907 SUPER *********.

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    But I would expect to hear a louder tap from the valve cover than I can hear through the stethoscope. It's significantly louder outside than stethoscoping anywhere on the motor?
     
  7. iowaredneck

    iowaredneck Administrator

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    hmmm, then you got me stumped
     
  8. TxFx04

    TxFx04 FFS Frequent Traveler

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    Congrats, your engine grew more valves and upgraded itself to a 5.4 3V :Grenade:
     
  9. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    Maybe it's hitting on an area that is close to a
    cover mounting bolt and not an area that is "hollow"
    transmitting the sound to the head/exhaust.
     
  10. AKBray907

    AKBray907 SUPER *********.

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    That's what I'm thinking, I'm thinking when it heats up the worn out tensioner doesn't build enough pressure but when it's revved it overcomes that an tightens so it goes away. Can these tensioner a just go bad? My Gauge inside the truck says I have good oil pressure an the drivers side doesn't do it so maybe just pull it apart an swap the chain an tensioner passenger side?
     

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