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  1. #1

    Default overheating problems in my larson 2007

    Need help
    If I cleaned the manifolds, replacing water pump and impeller (brand new), looking that I have pressure in the houses and !! keeps overheating my vortec 4.3 engine 2007…..what can I do ?
    Do I need to look for cracks? My oil is clean…. No mix

  2. #2
    Join Date
    Apr 2016
    Location
    barnegat NJ
    Posts
    2,707

    Default Re: overheating problems in my larson 2007

    step 1 compression check,Was thermostat checked in pot of hot water,openning at correct temp. Is engine fresh water cooled?salt water?

  3. #3
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    5,144

    Default Re: overheating problems in my larson 2007

    Ayuh,.... Mercruiser,..?? Volvo,..?? Something else,..??
    Any Grease is Better,... Than No grease at All....

  4. #4

    Default Re: overheating problems in my larson 2007

    Compression is check and ok in 6 cil. thermostat brand new and inspected, the engine is fresh water cooled.
    I’m frustrated

  5. #5

    Default Re: overheating problems in my larson 2007

    it is a vortec , mercruiser....I am really sad.
    If for some reason, inside the the engine exist a clog … should I need to take it out ?

  6. #6

    Default Re: overheating problems in my larson 2007

    I mean, the engine

  7. #7
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    6,758

    Default Re: overheating problems in my larson 2007

    one thread for one problem is standard practice....

  8. #8

    Default Re: overheating problems in my larson 2007

    I already clean the manifolds with water pressure and acetone , do you think the problem still there ?. the clog could be there ?

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