Cummins engine not enough boost

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Richard52, Feb 18, 2014.

  1. Richard52

    Richard52 Bobtail Member

    Messages:
    1
    Thanks Received:
    0
    Joined:
    Feb 18, 2014
    I have an ISX 550 Cummins engine. It is not getting enough boost. Only about 12 pounds of pressure. I found a crack in the air to air charger and replaced it. Still not getting enough. Any ideas?
     
  2. bgxpress2006

    bgxpress2006 Light Load Member

    Messages:
    244
    Thanks Received:
    66
    Joined:
    May 25, 2013
    Location:
    Montreal, Quebec
    did you check your rubber boots going to the air to air
     
  3. manasteel

    manasteel Light Load Member

    Messages:
    124
    Thanks Received:
    29
    Joined:
    Sep 10, 2012
    check the hose at the air compressor intake. it will rip on the back side
     
  4. Rig Wrench

    Rig Wrench Medium Load Member

    Messages:
    391
    Thanks Received:
    57
    Joined:
    Dec 24, 2010
    Location:
    northeast
    Check the map sensor, prolly packed full of carbon. Check the exhaust back pressure sensor on the thermostat housing too. Also may need to run a turbo test through insite. If the vanes are sticking it may cause this issue too