R56 Just joined up. Having an issue I just do not understand...

Discussion in '2nd Generation: 2007+ R55 through R61' started by Dancing Badger Farm, Jun 23, 2018.

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  1. Dancing Badger Farm

    Dancing Badger Farm New Member

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    #1 Dancing Badger Farm, Jun 23, 2018
    Good Afternoon All. I purchased a used 2007 6 speed manual non-turbo a short while ago at an auction. It ran great but by the time I got it home it was overheating and chugging hard. It was misfiring on all cylinders. I changed out the plugs and coil packs. I also changed out the valve cover gasket, fuel filter, thermostat and the tube from the water pump the thermostat (had a pin hole). By this time it was still misfiring on #3. I did the switch-a-roo with plugs and coils and the issue stayed with #3. I thought perhaps the injector was clogged so I used a can of Seafoam and ordered an injector. I drove it to work to get the Seafoam through the injector. As I pulled into my drive it stalled. I tried to restart it and it will not even turn over now. Plenty of juice, but it says "service" on the dash. I checked all connections and metered the fuses and everything is good. Any helpful hints? Thank you!
     
  2. wmwny

    wmwny Well-Known Member

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    #2 wmwny, Jun 23, 2018
    Welcome to M/A! I'd like to help, but my MINIs are all Generation Ones. However, it sounds like you have a bad #3 cylinder.
     
  3. Dancing Badger Farm

    Dancing Badger Farm New Member

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    #3 Dancing Badger Farm, Jun 23, 2018
    Thank you for the reply. I have already started to entertain that idea. What truly puzzles me why it will not even turn over now! I was going to change out the injector today (rain says otherwise) to rule that out. The no turning over really has me in a brain cramp!
     
  4. MCS02

    MCS02 Moderator
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    #4 MCS02, Jun 23, 2018
    What codes does it have?
     
  5. MCS02

    MCS02 Moderator
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    #5 MCS02, Jun 23, 2018
    Have you done a load test on the battery?
     
  6. Dancing Badger Farm

    Dancing Badger Farm New Member

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    #6 Dancing Badger Farm, Jun 23, 2018
    P115C and P303 I believe. Mass Air Flow sensor and #3 Misfire. I believe that air flow was from when it skipping hard just before it stalled.
     
  7. MCS02

    MCS02 Moderator
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    #7 MCS02, Jun 23, 2018
    I don’t think the battery is all of your problem but it could be part of it so I would start with having it tested. Next knowing what codes it is throughing will really help. I am sure one is misfire on cylinder 3. How hot did it get? You may have blown the head gasket if you drove it to long when it had overheated. I would do a compression test also.
     
  8. MCS02

    MCS02 Moderator
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    #8 MCS02, Jun 23, 2018
    Are you getting power to the number 3 coil pack?
     
  9. MCS02

    MCS02 Moderator
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    #9 MCS02, Jun 23, 2018
    And welcome to MA
     
  10. Minidave

    Minidave Well-Known Member
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    #10 Minidave, Jun 23, 2018
    Hard to do a compression test if it won't turn over....
    Put it in 4th, release the park brake and see if you can turn it over by rolling the car back and forth - if not -it's not the battery, you have a broken something in the engine. If it does roll over then you can go ahead and test the battery and so forth.
     
  11. MCS02

    MCS02 Moderator
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    #11 MCS02, Jun 23, 2018
    Last edited: Jun 23, 2018
    Well good point. He did say it wouldn’t turn over.
     
  12. Minidave

    Minidave Well-Known Member
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    #12 Minidave, Jun 23, 2018
    But I agree, if you want to find a misfire, first thing I do is run a compression test. I had a friend chase a #3 cylinder misfire for three years, chaning fuel pumps, filters, 3 different coils, wires, plugs and on and on......finally he borrowed my compression tester (I had asked him for three years to run the test) and sure enough - 50lbs of compression on cyl 3, turned out to be a burned exhaust valve.

    I'm concerned that the OP dropped a valve and locked the engine, or his timing chain let go.....
     
  13. MCS02

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    #13 MCS02, Jun 23, 2018
    I know back when I turned a wrench, a very long time ago, overheating a aluminum head motor could mean a new head gasket or even planing the head. We would always re torque the head to be on the safe side. These newer cars seem to do better. Or maybe it’s because their not Fiats :D
     
  14. Goldsmithy

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    #14 Goldsmithy, Jun 24, 2018
    Welcome to the site. I'm not a mechanic and I don't even play one on the internet, but good luck in finding your problem. I'm here for moral support :)
     
  15. Neil

    Neil New Member

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    #15 Neil, Jul 25, 2018
    Take a look at the oil. When the coolant mixes with oil it changes color and consistency. It turns brown and gooey. If you see this you got a blown head gasket. The compression test is a good idea too.
     

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