2nd Gen R56 Cooper S What did I do?

Discussion in '2nd Generation: 2007+ R55 through R61' started by itsmewutup, Dec 18, 2013.

  1. itsmewutup

    itsmewutup New Member

    Apr 11, 2012
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    Time to pick y'all's brains a bit. As I was driving to town earlier I dropped from 6th to 4th to pass a slow driver. When I stepped on it, it seemed to bog down. Now I have to be extremely easy on the gas or else it will bog down again. What did I do to it? I had this issue last year but it was a different motor. And I don't remember what the cause was. I know I never did get my fuel pump replaced but some had said that's what was wrong. Since getting the new motor put in I've not had any problem until now.

    08 MCS
     
  2. rum4

    rum4 Club Coordinator
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    I haven't a clue but will bump it up for the experts.....
     
  3. mrntd

    mrntd Well-Known Member
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    Seems like a fuel problem. Filter or injectors dirty. Pump bad.
    When you push the peddle your getting more air but not the fuel and it bogs. In the carb days it was filter and fuel jets getting dirty.
     
  4. BlwnAway

    BlwnAway Well-Known Member

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    I'm not a gen 2 person but have a question, do you think this problem before had anything to do with you having to replace your motor?

    The reason I ask is knowing the gen 1 fuel systems, if the vacuum line to the fuel regulator comes off, it causes a lean out situation, the motors won't bog, but that could simply be the difference in how a turbo car reacts to the problem vs an S/C car.

    Just a thought since it does sound fuel related, but like I mentioned, I'm not up on my gen 2 fuel systems.
     
  5. itsmewutup

    itsmewutup New Member

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    I'm honestly not sure if it had anything to do with it. I hope to help it didn't. I don't even have this moor paid off yet lol. I'm off for the holidays for 2 weeks so I'm gonna mess around with it and bring it to my shop that installed the motor and see what they have to say about it.
     
  6. Zapski

    Zapski Well-Known Member

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    Is it a delay between stepping on the gas and getting power? If that's what you mean, it could be a clutch or flywheel that's going. I had mine done last year on my 08 MCS.

    This year it's just been leaks of various kinds.
     
  7. itsmewutup

    itsmewutup New Member

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    No, that's not it. Just replaced my clutch in February. Basically if I step on the gas slowly it'll be just fine, but if I mash the gas to the floor or even push it too quickly it'll bog down (like its not getting fuel) I've been told its a good chance its got carbon build up. Its gotta be either that or something with the fuel. Probably get it cleaned first since it most likely needs to be done anyway then go from there.
     
  8. Nathan

    Nathan Founder

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  9. itsmewutup

    itsmewutup New Member

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    Didn't think of that. Where would I go in at?
     
  10. Miniman007

    Miniman007 New Member

    Dec 16, 2013
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    this is purely a guess but I'd say take off intake manifold and go in that way.
     
  11. Metalman

    Metalman Well-Known Member
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  12. Nathan

    Nathan Founder

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    Pull a spark plug first, take a look around. See if the cylinder walls and tops of the pistons look like they have carbon deposits.
     
  13. itsmewutup

    itsmewutup New Member

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    Stopped by my local shop today. Turns out its a bad Coil. Trying to decide to go with OEM $53 cheapest I've found or Facet $33. I will be replacing all 4 of them so that saves me $80. Recommendations? Yes? No?
     
  14. Dave.0

    Dave.0 Helix & RMW Powered
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    OEM because MINI's can be finicky about some aftermarket parts like coils. I would also replace all of them, but then again I am OCD about my car.
     
  15. itsmewutup

    itsmewutup New Member

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    As am I :)

    I'll just keep my others for spares.
     

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