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Mercruiser 8.1 Guardian mode

Discussion in 'Engines' started by meadengr, Jul 10, 2022.

  1. Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    11,287
    Location:
    Satsuma, FL
    My last gas fiasco was on a set of Mercruisers with raw water cooled fuel pumps. Alloy case was ate thru and water all in the fuel system.
    I got him going but that was THE LAST hands on I'll do on these later head aches.

    I hope the OP gets going with out having to throw in limbs to pay for it.
    Fishtigua likes this.
  2. meadengr

    meadengr New Member

    Joined:
    Jul 10, 2022
    Messages:
    14
    Location:
    Long Beach, CA
    No we have not hooked up scan tool but I did remedy the problem. After swapping out the manifold temp sensors with the other engine the problem movd to the other engine. I cleaned the sensors but one was Still bad. I replaced the manifold temp sensor and problem is solved.
    Thank you all. for your help!
    chesapeake46 likes this.
  3. meadengr

    meadengr New Member

    Joined:
    Jul 10, 2022
    Messages:
    14
    Location:
    Long Beach, CA
    After swapping out the manifold temp sensors with the other engine the problem movd to the other engine. I cleaned the sensors but one was Still bad. I replaced the manifold temp sensor and problem is solved.
    Thank you all. for your help!
  4. f3504x4ps

    f3504x4ps Member

    Joined:
    Apr 23, 2012
    Messages:
    131
    Location:
    Cape Canaveral, FL
    Glad to hear it’s all sorted out.