Weird sound in engine every few seconds

Discussion in 'Ask An Owner Operator' started by simongrewal, Aug 18, 2022.

  1. simongrewal

    simongrewal Light Load Member

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    Sep 17, 2017
    Indianapolis IN
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    Hello everyone. I noticed weird chunking sound in engine (dd15) 2014 has 865000 miles on it. First I noticed decreased oil pressure since last service done which was 3000 miles ago. But there is no engine check light on. Today I noticed this weird sound. Please help what it could be.
    Thanks in advance. Please see this link
    https://youtube.com/shorts/BkPyq4z_XkE?feature=share
     
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  3. 86scotty

    86scotty Road Train Member

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    Weird. Any different under load or at different RPM's?
     
  4. simongrewal

    simongrewal Light Load Member

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    Sep 17, 2017
    Indianapolis IN
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    No, its same. Frequency of sound changes when RPM are higher. Like at 1500 rpm i hear it every 2-3 seconds. I had head rebuilt 2 months ago. It was good till yesterday.
     
  5. Dadetrucking305

    Dadetrucking305 Heavy Load Member

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  6. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    He did. Original post.
     
  7. simongrewal

    simongrewal Light Load Member

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    Sep 17, 2017
    Indianapolis IN
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  8. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    59EX and Another Canadian driver Thank this.
  9. simongrewal

    simongrewal Light Load Member

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    Sep 17, 2017
    Indianapolis IN
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    Do you think it could be camshaft or anything in cam housing?
     
  10. SmallPackage

    SmallPackage Road Train Member

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    Marion Texas
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    If it were a gas burner engine I’d say it sounds like a backfire through the egr.
     
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