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Removed muffler on w900 w/3406e, now I hear trouble

Discussion in 'Trucks [ Eighteen Wheelers ]' started by walton379, Aug 31, 2010.

  1. Aug 31, 2010 #1
    walton379

    walton379 Light Load Member

    63
    2
    Nov 21, 2008
    Moon Lake, MS
    0
    So I removed my rotted out muffler and went straight pipes. I know it's illegal. My issue is now at cruising speed with very little throttle input( 10% maybe) I have a missing sound. Honestly it sounds like a Huey helicopter flying close by. Best way I can describe it. Also when under power loaded at full boost it smokes slightly erratically. Do you guys or gals think it's a bad injector? Thanks
     
    walton379, Aug 31, 2010
    walton379, Aug 31, 2010
    #1
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  3. Aug 31, 2010 #2
    RenegadeTrucker

    RenegadeTrucker Road Train Member

    2,779
    2,494
    Dec 25, 2009
    Montana
    0
    Could be, roll it into your favorite shop and have em hook it up on the computer, it could be a bad injector, could be it needs the overhead run
     
    RenegadeTrucker, Aug 31, 2010
    RenegadeTrucker, Aug 31, 2010
    #2
  4. Aug 31, 2010 #3
    squarebox

    squarebox Medium Load Member

    370
    58
    Aug 17, 2010
    mississippi
    0
    crack each injector line one by one it should make it "rough" on each cylinder if you come to one crack it and the engine doesn change tune, theres your bad injector
     
    squarebox, Aug 31, 2010
    squarebox, Aug 31, 2010
    #3
  5. Aug 31, 2010 #4
    walton379

    walton379 Light Load Member

    63
    2
    Nov 21, 2008
    Moon Lake, MS
    0
    That's how I check them on a mechanical engine. I know the jakes are weak. That leads me to believe the overhead needs to be run. I'm going to search that
     
    walton379, Aug 31, 2010
    walton379, Aug 31, 2010
    #4
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