2nd Gen R56 Cooper Most liked posts in thread: Car stumble, misfire

  1. wmwny

    wmwny Well-Known Member

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    #2 wmwny, Feb 6, 2017
    Welcome to M/A! :Thumbsup:

    I cannot help you as I have Generation 1 MINIs, but there are plenty of others here who can and will offer advice. Good luck! :fingerscrossed:
     
  2. mrntd

    mrntd Well-Known Member
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    #3 mrntd, Feb 7, 2017
    It sounds like an ECU problem. Or a sensor pick up to the ECU.
    I had a car act just like that but that was in the carbureted days and it was the acceleration pump. Today that's all controlled by the ECU
     
  3. Metalman

    Metalman Well-Known Member
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    #4 Metalman, Feb 7, 2017
    Last edited: Feb 7, 2017
    You might want to check the throttle body...

    It sits low on the intake manifold if I recall correctly...

    Very possibly it could have oil buildup from the EGR system, possible messing with the air flow through that unit...

    You might be surprised how much oil would be sitting inside that part... Worth pulling it and doing a thorough cleaning...

    Throttle.JPG

    [​IMG]
     
  4. MCS02

    MCS02 Moderator
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    #5 MCS02, Feb 7, 2017
    Welcome to MA!
     
  5. 00Mini

    00Mini Well-Known Member

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    #6 00Mini, Feb 7, 2017
    Welcome to Motoring Alliance the best MINI forum on the interweb !!
     
  6. Gymrat2

    Gymrat2 New Member

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    #7 Gymrat2, Feb 8, 2017
    Update:
    We'll the engine light is off and the it stopped stumbling. Running like a dream. I wonder if the fact that my wife drives it in the city everyday (stop and go, light to light) has anything to do with it. This week I've been driving at a steady higher speed on the highway to work and back, maybe this clean out whatever **** been causing it.

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  7. Gymrat2

    Gymrat2 New Member

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    #8 Gymrat2, Feb 8, 2017
    I will do this despite that it's running good now.

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  8. Metalman

    Metalman Well-Known Member
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    #9 Metalman, Feb 8, 2017
    When you do.... Please post up some before pictures with your milage.... I'm sure Cooper owners would be interested in seeing what it looks like...
     
  9. Gymrat2

    Gymrat2 New Member

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    #10 Gymrat2, Feb 8, 2017
    Good thinking. I will

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  10. Gymrat2

    Gymrat2 New Member

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    #11 Gymrat2, Feb 9, 2017
    Well took it to the mechanic and the valve cover gasket is leaking into the spark plug vally. Filled it up causing the coils on cylinder 1 and 2 to miss fire. They cleaned it out and still missing.
    So gaskets seals 4 plugs and 2 coil=$765 canadian. **** me. Two weeks ago they changed the camshaft solenoid=$600. What's next????
    Does this make sense to everyone? Or am I getting duped?

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  11. MCS02

    MCS02 Moderator
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    #12 MCS02, Feb 9, 2017
    No. Not to me.
     
  12. Gymrat2

    Gymrat2 New Member

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    #13 Gymrat2, Feb 9, 2017
    Oh well what's done is done. I should have taken pictures and will call the mechanic in the morning to send me some. When I arrived he had the spark plugs and coils for me to look at. I tell you the plugs were eroded pretty bad. Even the coils, oil had seeped up around the plug into the coil itself, and the rubber was pretty rotten too.
    We will see how it drives over the next few days.

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  13. Gymrat2

    Gymrat2 New Member

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    #14 Gymrat2, Feb 27, 2017
    Sorry for the late update everyone.
    Car stumbling problems are gone. No more check engine lights. But now there is a large ticking noise. Mechanic says it's normal but I doubt it. My research says it's either a timing chain tensioner or vacuum pump thing. Any input? I'll start another thread.

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