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Thread: M52 Engine won’t idle or run

  1. #1
    Join Date
    Sep 2017
    Location
    Ireland
    Posts
    20
    My Cars
    E36 drift car

    M52 Engine won’t idle or run

    M52tu engine swap,has fuel pressure,has spark(new plugs),will start and spit flames out of manifold won’t idle,had it goin other day and was running extremely rough with pops from intake,tried it with and without maf,and any sensor I could unplug.
    Any help would be appreciated as at end of road


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  2. #2
    Join Date
    Sep 2017
    Location
    Ireland
    Posts
    20
    My Cars
    E36 drift car
    Wow great help on here


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  3. #3
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,939
    My Cars
    2018 BMW M240i
    Do you know if the “new” engine is in good condition. Flames coming from
    thr intake indicates improper spark timing.

  4. #4
    Join Date
    Dec 2013
    Location
    Chicagoland area
    Posts
    4,372
    My Cars
    EXOTICS
    Massive intake leak or as Marco already suggested, improper timing.

  5. #5
    Join Date
    Sep 2017
    Location
    Ireland
    Posts
    20
    My Cars
    E36 drift car
    *Flames from the exhaust manifold sorry,resealed intake manifold gasket,vacuum lines are not hooked up,not sure how to check timing


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  6. #6
    Join Date
    Sep 2017
    Location
    Ireland
    Posts
    20
    My Cars
    E36 drift car



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  7. #7
    Join Date
    Sep 2017
    Location
    Ireland
    Posts
    20
    My Cars
    E36 drift car



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  8. #8
    Join Date
    May 2010
    Location
    Honolulu, Hawaii
    Posts
    753
    My Cars
    '73 E9, '94 E34, '02 E46
    This isn't your current thread....? Put the motor at TDC then post a cams pic, just like was suggested in the other thread.
    Charlie

    Your mission, should you decide to accept it, is to add value to these threads, either by pictures or by descriptions, so the next person with the same or similar problem stands on your shoulders.

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