5.3l knocking and other noise - VIDEO

Discussion in 'GM Powertrain' started by Lifted_Bowtie, Jun 24, 2011.

  1. Lifted_Bowtie

    Lifted_Bowtie Member


    Watch the video and help me determine what this knocking noise is. It COULD be an exhaust leak, but I'm not sure. The other noise, is coming from ehhh, behind the motor. I was thinking it could have something to do with the torque converter or the flywheel, ect, but again, I'm not sure. Any help would be awesome. Thanks guys!
  2. Enkeiavalanche

    Enkeiavalanche Rockstar 4 Years ROTM Winner 5000 Posts

    Well first off I hope that blue wire in the door jam is fused right.. 2nd Maybe a leak. Are those headers on your truck?
  3. Lifted_Bowtie

    Lifted_Bowtie Member

    yes, the blue wire is fused properly, it wouldnt be on my truck if it wasnt.. lol but nope, just the stock manifolds, looking to get headers soon. i looked at all the ports on the heads (with manifolds on) and didnt see any traces of carbon build up where it could be leaking...?
  4. Enkeiavalanche

    Enkeiavalanche Rockstar 4 Years ROTM Winner 5000 Posts

    I see now no Muffler.. Maybe something to do with that..
  5. serg

    serg Member

    I had a older Chevy 1500 and that noise was coming from the Exhaust manifold that gasket were bad knocking/ticking noise hope you find a fix
  6. Lifted_Bowtie

    Lifted_Bowtie Member

    i thought about that also, im hoping to get a muffler for it here soon.. would it be okay if i just clamped a muffler on and just go without getting the pipes routed?

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