Cummins n14 high oil pressure

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by LjRichards, Jul 2, 2022.

  1. LjRichards

    LjRichards Bobtail Member

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    Jul 2, 2022
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    So I changed the turbo and charge air cooler, and back head gasket, put new oil and filter on
    And on start up I'm running 40psi oil pressure? What should I check or is their away to check the sensor? I'm rev it up it won't go over 40 but will drop to about 30psi
     
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  3. jamespmack

    jamespmack Road Train Member

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    Thats in spec. Low psi, high volume is a N14. Been a few years. I think low level is either 12/18 warm at idle. If she does 35 psi wide open. Your good. Constant psi engine.
     
  4. LjRichards

    LjRichards Bobtail Member

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    Jul 2, 2022
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    Ots run 30 to 40 psi on a cold start and not dropping
     
  5. LjRichards

    LjRichards Bobtail Member

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    Jul 2, 2022
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    Its 40 to 30 at idle
     
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