Question How do I Engine R56 Cooper ECU How to test the PCV valve on a N12 valve cover

Discussion in 'General Technical Questions and Answers' started by Ron Day, Feb 20, 2019.

  1. Ron Day

    Ron Day New Member

    Feb 19, 2019
    10
    2
    3
    Male
    Prepress/Retoucher
    Milford, PA
    Ratings:
    +4 / 0 / -0
    Mechanic said the PCV is bad. Drilled hole in oil cap to test vacuum, and there was no vacuum. I asked him why he didn't just plug the hose going into the PCV, he said he didn't know if that would diagnose the problem.

    2009 Mini Cooper R56/L12 56K miles. Symptoms: Car starts right up without issue, Idle is very rough for a while then smooths out. Drive for a bit, stop and rough idle can come back. Rough enough to almost stall. When engine is stopped, car can make rapid, muted thumping sound for about 10 seconds or so (may not be related.) Error code P2187.

    So the question is, how to test to see if the PCV valve is stuck open causing this issue.
     
  2. MCS02

    MCS02 Moderator
    Staff Member Articles Moderator Supporting Member Supporting Member

    Jul 31, 2009
    9,461
    5,055
    113
    Male
    Ratings:
    +5,687 / 6 / -0
    It has two PVC valves. One on the passenger side going to the intake and the other on the divers side going to the turbo. Sounds like that would work just never heard of it being done that way.
    Have you checked for carbon build up on the intake valves? Also does your mechanic have experience with Minis?
     
  3. MCS02

    MCS02 Moderator
    Staff Member Articles Moderator Supporting Member Supporting Member

    Jul 31, 2009
    9,461
    5,055
    113
    Male
    Ratings:
    +5,687 / 6 / -0
    Welcome to MA
     
  4. Ron Day

    Ron Day New Member

    Feb 19, 2019
    10
    2
    3
    Male
    Prepress/Retoucher
    Milford, PA
    Ratings:
    +4 / 0 / -0
    Nice to be here! Had planned to join for the fun, but this mess got me here earlier than I expected.

    My regular mechanic ( very honest ) doesn't know that much about mini's, so he brought someone in (don't know how much he knows). The valves were surprisingly clean.

    A little history: This car is new to me (6 weeks), so unknown maintenance history. 56K original miles. I've replaced the coils and plugs, Oil, Oil filter and air filter. Last week I had the start of a timing chain knock and rough idle so I went on the web looking for a shop that specialized in mini's. One was advertised about 2 miles from my home. I wrote them, asked if they had the tools and training to do a timing chain replacement if necessary, they said yes so I dropped the car off.

    Dropped the car off that evening, authorized an hour of diagnostics ($100/hr), thinking they would need that to measure the timing chain and get back to me.

    Got call the next morning, I need a new tensioner and the cost will be over $600. When I asked why, I was told that they removed the valve cover to check the timing chain and guides...

    At this point, I can see they are going to charge me for the valve cover gasket (they needed to order all the parts I needed from the dealership) anyway, so I give them the okay to replace the tensioner.

    Stop by the next day and ask what the chain slack measurement was, only to be told they don't have the tool to measure chain slack, at which point they take me out to the car (valve cover removed) and demonstrate the weak tensioner by bending the chain with a large screw driver.

    Next morning rough Idle, lean air/fuel code, yellow engine light.

    That's when my trusted mechanic got involved, checked MAP, smoke test, vacuum line check then finally the check mentioned above showing no vacuum in the crank.

    The bit they are questioning is the one in the valve cover.
     
  5. MCS02

    MCS02 Moderator
    Staff Member Articles Moderator Supporting Member Supporting Member

    Jul 31, 2009
    9,461
    5,055
    113
    Male
    Ratings:
    +5,687 / 6 / -0
    I recently had a timing chain tensioner go bad. I replaced the the chain at the same time. its a kit that comes with everything. I know this was over kill but I am a little paranoid about timing chains. I could have done just the tensioner.
    What part of the country do you live in. Maybe we can help find a good mini specialist.
    If you want your mechanic to do it he will need a special tool. Here is a link for what you need. Agin you can do just the tensioner.

    https://www.detroittuned.com/mini-n14-timing-chain-kit/

    It comes with everything.

    The sprockets for the cams and crank do not have any keys in them. The tool holds the cams and crank in place once you install the new chain and tensioner you torque the sprockets to speck and that holds new. It is very important to torque it the way Mini says to do it or the sprockets will slip and you will bend valves.

    here is the tool he will need

    https://www.detroittuned.com/mini-n14-timing-tool-kit-rental/

    The timing may be off now. I would take care of the tensioner problem first then see it that fixes the problem. It sounds like this is where it all started.

    Lastly here is a youtube link that shows how to do it. I like this one because he torqued it wrong and had to redo it.

     
  6. Ron Day

    Ron Day New Member

    Feb 19, 2019
    10
    2
    3
    Male
    Prepress/Retoucher
    Milford, PA
    Ratings:
    +4 / 0 / -0
    My future plans are: V-belt, thermostat, water pump and tube, all the hoses, and of course the timing chain. The MAF, MAP, VANOS and PCV are all on my watch list as well. That said, need to know how to diagnose this no vacuum / lean fuel / rough idle issue first.

    Have already ordered most of the tools and parts.

    NE PA Near Port Jervis
     
  7. MCS02

    MCS02 Moderator
    Staff Member Articles Moderator Supporting Member Supporting Member

    Jul 31, 2009
    9,461
    5,055
    113
    Male
    Ratings:
    +5,687 / 6 / -0
    I know you probably have but double check all your vacuum lines. I had a vacuum line blow off my R58. it was sitting next to where it connects so I almost missed it.
    I may have misunderstood, did the shop replace the timing chain tensioner?

    One of our members should know of a good shop near by.
     
  8. Ron Day

    Ron Day New Member

    Feb 19, 2019
    10
    2
    3
    Male
    Prepress/Retoucher
    Milford, PA
    Ratings:
    +4 / 0 / -0
    Yea, they've been checked by three people so far, no doubt a third on saturday. I'm going to see a Guru in Philly on saturday. Since it is an idle only error at this point I feel okay driving it down there. Esp if it gets fixed. Yea, I should have stopped them once I realized they didn't have the tool to measure chain slack, but I figured it was safer to have a new tensioner and be able to drive it to another shop than have them put everything back together and get it towed.
     
  9. MCS02

    MCS02 Moderator
    Staff Member Articles Moderator Supporting Member Supporting Member

    Jul 31, 2009
    9,461
    5,055
    113
    Male
    Ratings:
    +5,687 / 6 / -0
    If your near Philly Helix is a great shop and know MINIs inside out. @Dave.0 has one of the baddest R53 around they do all his work.

    http://store.helix13.com
     
  10. Ron Day

    Ron Day New Member

    Feb 19, 2019
    10
    2
    3
    Male
    Prepress/Retoucher
    Milford, PA
    Ratings:
    +4 / 0 / -0
    2.5 hours away from philly. Going there as a last resort till I can either gain the confidence to fix this stuff myself, or find someone reasonable nearby. Besides, all I see on that site is parts for sale, nothing about service.
     
  11. MCS02

    MCS02 Moderator
    Staff Member Articles Moderator Supporting Member Supporting Member

    Jul 31, 2009
    9,461
    5,055
    113
    Male
    Ratings:
    +5,687 / 6 / -0
    No they do service give them a call. He is very good.
     

Share This Page