D12 whistle while using epg

Discussion in 'Volvo Forum' started by Mynameisaldin, Feb 12, 2018.

  1. Feb 12, 2018 #1
    Mynameisaldin

    Mynameisaldin Bobtail Member

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    Sep 18, 2017
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    So I've got a 2005 vnl D12 engine. Sometimes when using first stage engine brake (epg) I hear a whistle. I've checked for boost leaks, there are none. EGR clamps are tight. Replaced clamp from epg/turbo. Any thoughts?

    Also my fuel mileage is kind of crappy. I've been getting 5.6 for last 20k miles. I've replaced turbo, intercooler, various hoses and clamps, Egr FIX, k and n filter. Fuel pressure is ok, injectors are ok. Any ideas on this? Maybe the above issue is related ?
     
    Mynameisaldin, Feb 12, 2018
    Mynameisaldin, Feb 12, 2018
    #1
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  3. Feb 13, 2018 #2
    KB3MMX

    KB3MMX Road Train Member

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    I would bet that you have a cracked exhaust manifold on backside
     
    KB3MMX, Feb 13, 2018
    KB3MMX, Feb 13, 2018
    #2
  4. Feb 13, 2018 #3
    nasriza

    nasriza Road Train Member

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    Check Exhaust manifold for leaks bet either crack or gasket slipped best way to do this is cold engine with soap and water, make sure air psi is over 100 and then spray everything down and check the right side for any bubbles or major leaks most likely manifold in my opinion
     
    nasriza, Feb 13, 2018
    nasriza, Feb 13, 2018
    #3
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