Manifold gauge not working

Discussion in 'Peterbilt Forum' started by Jeep2000, Mar 24, 2014.

  1. Jeep2000

    Jeep2000 Bobtail Member

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    Mar 24, 2014
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    Hi. I have a cat c15 acert 2005 the manifold psi gauge quit working. The truck pulls great. Boosts up fine. But the manifold gauge don't move. I took the line off the back of the gauge and blow air into the gauge the needle moves. Not sure what's going on with this.
     
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  3. baha

    baha Road Train Member

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    Jul 25, 2013
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    Follow it leads to intake man. same looking line.
     
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