Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: P0301 - Misfire Cylinder 1 w/ DSC flashing

  1. MCS02

    MCS02 Moderator
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    #2 MCS02, Sep 28, 2015
    How old is the coil and plug wires?
     
  2. sethat46

    sethat46 Well-Known Member

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    #3 sethat46, Sep 28, 2015
    coil, plugs, tmap sensors, and O2 sensors are viable options.
     
  3. Nathan

    Nathan Founder

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    #4 Nathan, Sep 28, 2015
    Don't forget to check the crank pulley. Assuming it is OEM.
     
  4. Canusrufis

    Canusrufis RMW Powered R53
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    #11 Canusrufis, Oct 6, 2015
    You don't want my advice. My problem was a broken intake valve spring. Saw it as soon as the valve cover came off.

    To remedy I some how ordered a list of RMW goodies from Jan and a tune at HELIX on the 23rd. :D
     
  5. Canusrufis

    Canusrufis RMW Powered R53
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    #5 Canusrufis, Sep 28, 2015
    coil is probably original. plugs newish looking but not certain how old.

    I'll start there. and pull out the plugs which have probably 3k on them.
     
  6. Canusrufis

    Canusrufis RMW Powered R53
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    #6 Canusrufis, Sep 28, 2015
    Last edited: Sep 28, 2015
    crank pulley is new, ATI super damper type. but doesn't mean it didn't fail! I'll check that too Nat. thanks
     
  7. Canusrufis

    Canusrufis RMW Powered R53
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    #7 Canusrufis, Sep 30, 2015
    Not the coil... unfortunately

    Finally got to do a compression test and cylinder 1 has 0 (zero) compression, cylinder 2 135psi, cylinder 3 138psi, Cylinder 4 136Psi.

    Wet test on Cylinder 1 still had zero so the head is coming off.
     
  8. MCS02

    MCS02 Moderator
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    #8 MCS02, Oct 1, 2015
    Sorry to hear that.
     
  9. BlimeyCabrio

    BlimeyCabrio Oscar Goldman of MINIs
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    #9 BlimeyCabrio, Oct 1, 2015
    Ouch. Sorry dude.
     
  10. slippysoup

    slippysoup New Member

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    #10 slippysoup, Oct 6, 2015
    I'm in a similar boat except cylinder 3. Since I'm pulling the head as well, anyone have a list of things to replace while in there?
     
  11. Canusrufis

    Canusrufis RMW Powered R53
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    #12 Canusrufis, Oct 6, 2015
    not certain condition or milage but some suggestions

    Chain tensioner, chain tensioner rails, radiator fluid, thermostat and housing. temp sensor (just b/c), head gasket, valve cover gasket and spark plug tube gaskets (4x donuts).

    You might find other stuff while there.