2nd Gen Most liked posts in thread: R56 Cooper S 07 major loss of power

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  1. Miniac

    Miniac Member

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    #18 Miniac, Oct 8, 2018
    They have replaced ignition coil on cylinder 3 & replaced all plugs....
    big thanks for all of your input!
    I’d buy a round of beers if you weren’t on the other side of the planet!
    A wealth of information on this forum.
    Still want to investigate this walnut blasting idea.... it seems odd that it’s not a big deal here in Australia...
    For what it’s worth the car does a lot of 20 minute drives. It is my understanding that short drives are not great for the r56......




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  2. Miniac

    Miniac Member

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    #5 Miniac, Oct 4, 2018
    Hmmm ironic..... just brought new plugs last week . I will run down to mechanic and get him to run codes.
    Thanks for the input guys, I will follow up with the results
    Cheers


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  3. fishmonger

    fishmonger Well-Known Member

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    #20 fishmonger, Oct 9, 2018
    It's just different media and any "media blasting" outfit should have access to it.

    https://www.amazon.com/Walnut-Shell-20-40-Blasting-Abrasive/dp/B00NAGUCZO

    The idea is that it is easier on soft aluminum surfaces. The bulk of the dealer cost is the fee to open up the head to get the media there.

    Milan has you covered with instructions - the rest is a trip to Harbor Freight (or your equivalent discount tool chain) for tools and walnut media:

     
  4. MCS02

    MCS02 Moderator
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    #3 MCS02, Oct 4, 2018
    I had something like this happen on my R58. It did it right redline. Limped home, it sounded BAD. Same I could only get to about 35 MPH. I thought for sure I had dropped a valve. I turned out to be a coil pack.
     
  5. MCS02

    MCS02 Moderator
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    #17 MCS02, Oct 8, 2018
    Soda would work too. The problem is the N18 engine is a direct injection engine so there is no fuel washing the oil vapor from the PVC valve off the valves. To the intake and intake valves get caked up. If it gets bad enough the car will not run.
     
  6. MCS02

    MCS02 Moderator
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    #23 MCS02, Oct 10, 2018
    I use the OEM filters from the dealer, if I cant got one from the dealer I use Wix.
     
  7. fishmonger

    fishmonger Well-Known Member

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    #24 fishmonger, Oct 10, 2018
    Mann HU 8162x (got a few on the shelf) or Wix 57303
     
  8. Qik

    Qik Well-Known Member

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    #2 Qik, Oct 4, 2018
    Last edited: Oct 5, 2018
    That check engine light can be anything, it's odd your manual points you towards a cat fault. To me it sounds like you've got a failed coil. I'd advise changing them all and the plugs at the same time. Go to a parts store and have them check what codes you have to be sure. If it's a coil you'll have misfires and injector shut down.
     
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  9. MCS02

    MCS02 Moderator
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    #9 MCS02, Oct 7, 2018
    You could do it old school. With the car idling pull the plug on the coil packs one at a time and see if the engine stumbles. the one that doesn’t would be the bad one.

    This is a 07 S? When was the last time you had it walnut blasted?
     
  10. Miniac

    Miniac Member

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    #10 Miniac, Oct 7, 2018
    Early 07, never been blasted....
    I think she hasn’t had the most meticulous care in her life.
    I’ve only owned for 6 months.
    The shuddering was the part that has me most perplexed. I’ve never felt a car shudder like that. ..
    Will keep you all posted on the outcomes..
    Cheers



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  11. Zapski

    Zapski Well-Known Member

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    #12 Zapski, Oct 8, 2018
    I’m also going to say coil, I had that happen to me once. Luckily I had an older set of coils at the house and was able to pop them in. It shouldn’t cost too much, and it’s something you can do yourself, since they pretty much just pop out.
     
  12. MCS02

    MCS02 Moderator
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    #15 MCS02, Oct 8, 2018
    LoL. The dealer should do it. My dealer charges $800 US. Some Independent shops also do it. If you have a shop vac and compressor for about 100 bucks you can buy the tools to do it yourself.

    I don't know anything about Johnson and his rod!:eek::D
     
  13. Miniac

    Miniac Member

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    #22 Miniac, Oct 9, 2018
    Righto, looks like I’m changing oil every 5000kms then. Out of curiosity what filters do people use.... Some seem to be of higher quality than others.

    Oh and btw the beer is always cold!!!


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  14. fishmonger

    fishmonger Well-Known Member

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    #28 fishmonger, Oct 10, 2018
    5-30 is fine for my low dollar motor parts. last oil analysis said it was a happy motor, at 100k
     
  15. Sully

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    #4 Sully, Oct 4, 2018
    Agree - pull the code, sounds like a coil.
     
  16. Sully

    Sully Administrator
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    #6 Sully, Oct 5, 2018
    Cool - let us know and fingers crossed. :Thumbsup:
     
  17. MCS02

    MCS02 Moderator
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    #7 MCS02, Oct 6, 2018
    Did you find the problem?
     
  18. Miniac

    Miniac Member

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    #8 Miniac, Oct 7, 2018
    Mechanic is busy.... hasn’t had a chance to pull the codes yet....
    I have a feeling I’m going to be haemorrhaging cash...../



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  19. MCS02

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    #11 MCS02, Oct 8, 2018
    The N14 engines need blasting every 40k or so. If it has never been done you need to have the intake checked.
     
  20. Dave.0

    Dave.0 Helix & RMW Powered
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    #13 Dave.0, Oct 8, 2018
    11 year old car with questionable maintenance..... I will put my money on Carbon build up and needing walnut blasting maybe coils. I would also change the plugs.
     
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