Freightliner Century S60 low boost! Help

Discussion in 'Freightliner Forum' started by Alex1990, Dec 7, 2019.

  1. Alex1990

    Alex1990 Bobtail Member

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    4
    Jun 20, 2015
    0
    Hi everyone, have some weird problem. I’ve got Detroit S60 14 L , and in one day I found it makes really low boost and poor MPG. So I decided to do a pressure charge air system leak test , and found major leaks over intake manifold gaskets . So I replaced them ,clean manifold and head with metal brush.Did test again and problem is still there . Basically system is not holding pressure ( pressure drops right away, from 25psi to 0 psi in 10 seconds) .Re did the test and found that air still leaking through intake manifold gaskets but much less . These gaskets just metal with no rubber or something like that . So should I try to put some sealer over the gaskets or what to do ? But honestly ,I don’t think gasket is only the problem , cause leak is really small and can’t lead to such sudden air lose . Need to look somewhere else but can’t see or hear air disappear.
     
  2. Hulld

    Hulld Road Train Member

    2,163
    4,228
    Oct 19, 2015
    Upstate NY
    0
    Check your charge air cooler in front of the radiator.
    Use a spray bottle with soapy water in it and spray down the entire system you should see the leak fairly easily.
     
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