Engine Drivetrain 1st Gen Cooper S P0301 - Misfire Cylinder 1 w/ DSC flashing

Discussion in 'Tuning and Performance' started by Canusrufis, Sep 28, 2015.

  1. Canusrufis

    Canusrufis RMW Powered R53
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    So this just happened on a lovely rainy day in NC. I was exiting off the highway and car went limp, almost stalling SES (or check engine can't remember which now) and the DSC flashing. I could a smell a bit of oil too which put me in panic mode. I was able to nurse into a shopping center parking lot across from my office.

    Code reader shows P0301. I checked the oil level and all seemed ok, normal levels. I reset the code and started it back up. Just ran like **** - definitely not on all cylinders (my guess). Nat's P0301 thread scares the hell out of me.

    Anything I can try before towing home (or dare I drive it 20min home)? I certainly don't like the low/zero oil pressure at idle -- although the low oil light never came on.

    btw, its a 05 MCS with just over 100k.

    Thanks for any help.
     
  2. MCS02

    MCS02 Moderator
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    How old is the coil and plug wires?
     
  3. sethat46

    sethat46 Well-Known Member

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    coil, plugs, tmap sensors, and O2 sensors are viable options.
     
  4. Nathan

    Nathan Founder

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    Don't forget to check the crank pulley. Assuming it is OEM.
     
  5. Canusrufis

    Canusrufis RMW Powered R53
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    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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    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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    Sorry to hear that.
     
  9. BlimeyCabrio

    BlimeyCabrio Oscar Goldman of MINIs
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    Ouch. Sorry dude.
     
  10. slippysoup

    slippysoup New Member

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    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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    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
     
  12. Canusrufis

    Canusrufis RMW Powered R53
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    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.
     

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