Results 1 to 4 of 4

Thread: DIY/How To: changing Spark Plugs on a K13 (Micra/March)

  1. #1
    Senior Member Nobuseri's Avatar
    Join Date
    May 2016
    Location
    Montreal, Quebec
    Posts
    229
    Thanks
    26
    Thanked 108 Times in 71 Posts

    DIY/How To: changing Spark Plugs on a K13 (Micra/March)

    So it seems there's a lot of miss-conception about changing spark plugs on the HR16DE, I decided to get DIY and show a bit of the truth behind getting this done. It is not necessarily for everyone but should save a couple of hundred dollars from the dealer.

    Since my car now is coming close to 128k it is well overdue for a tune-up and changing the spark plugs is a about a whole day's worth of work.

    There's a few things required tho, first of all, a special 14mm thin walled socket that can fit inside the spark plug bore without interference and with a rubber holder on the inside. This is where the special tool is required, Snap-On sells it (part# S9714MK) it's not a cheap socket selling for about 50$. The savings come from doing the job yourself.
    Name:  IMG_3736.jpg
Views: 1027
Size:  87.0 KB

    The rest of the tools required are basic set of 3/8 extensions and ratchets. 10mm sockets.

    First miss-conception is that the owner requires to buy a brand new set of intake plenum gaskets, that is not true, they are re-usable in design and simply need to be cleaned.

    So I went ahead and took apart the intake filter out.


    I continued to disassemble the rest of the plenum assembly, there is a total 7 10mm bolts holding itself down to the cam cover.


    At this point to remove the plenum I had to remove the entire front bumper, because the hood latch assembly wouldn't permit it's removal due to interference, this got quite labour intensive.


    Moving forward, I removed the throttle body too, 4x 8mm bolts hold it down. Removing the engine coolant hoses are tricky but a must.
    Name:  IMG_3730.jpg
Views: 1013
Size:  93.1 KB

    Take note, to get clearance to remove the plenum, I also had to remove the intake solenoid it's held down by a small 8mm screw. Some oil may drip.

    Second miss-conception, OEM plugs being Iridium, well mine weren't, they were Platinum tip models. Part# starts with PL = Platinum
    So talking spark plugs, the new ones I ordered for the the job are NGK Iridium IX, these are the top of the line models Part# LKAR6AIX-11, these have a stock heat rating of 6 (cold) 2-12 is the gauge from hot to cold plug. These cost from 12-15$ each

    Name:  IMG_3735.jpg
Views: 942
Size:  90.1 KB

    These plugs have fine iridium tip and platinum ark

    Name:  IMG_3737.jpg
Views: 940
Size:  94.7 KB

    Here's the plenum's re-usable gasket, it has tabs for easy removal, I suggest cleaning it before re-assembly.

    Name:  IMG_3742.jpg
Views: 951
Size:  91.9 KB

    There is also a re-usable O-ring gasket on the throttle body side.

    Name:  IMG_3743.jpg
Views: 929
Size:  86.1 KB

    So using the special socket to remove the old spark plugs, I found out the stock ones on my car were indeed Platinum types from NGK. It seems I was well overdue for changing them, here they are lined up from cylinder #1 to 4

    Name:  IMG_3740.jpg
Views: 976
Size:  97.0 KB

    It seems cylinder #3 was running rich due to it's darker color, something to investigate. When doing a tune-up this is the best way to see the condition of the internals of the engine and this is big preventive maintenance many skip over. This gave me a huge report on what is going on with my engine.

    Name:  IMG_3738.jpg
Views: 952
Size:  94.4 KB

    So I went ahead and changed all the spark plugs and I also swapped my used coil packs to some new ones I had lying around from the scrap.

    At this point re-assembly was in order, I had an extra plenum so I decided it was a good time to swap it for this wrinkle finished model I made a few days prior.

    Name:  IMG_3741.jpg
Views: 946
Size:  97.9 KB

    I think the result looks quite professional, take note I also equipped it with a newer T/B all cleaned up for this tune up.

    Name:  IMG_3744.jpg
Views: 956
Size:  94.0 KB

    After doing it myself, it turned out not to be such a pain, but a lot of disassembly work before getting to the cam cover.


    Last edited by Nobuseri; 08-21-2018 at 11:14 AM.

  2. The Following 3 Users Say Thank You to Nobuseri For This Useful Post:

    Azmodon (08-20-2018),MetroMPG (08-21-2018),MrMicra2015 (08-26-2018)

  3. #2
    Administrator MetroMPG's Avatar
    Join Date
    Feb 2014
    Location
    1000 Islands, Ontario
    Posts
    4,423
    Thanks
    1,451
    Thanked 557 Times in 430 Posts
    Fantastic thread! I wish I could press "thanks" more than once -- this is something many owners are going to benefit from. Thanks for taking the time to document it!

    I'm adding it to the Micra modifications, customizations & DIY list

        __________________________________________

        click to view fuel log View my fuel log 2015 Micra S manual: 5.0 L/100 km ... 56.5 mpg (Imp) ... 20.0 km/L ... 47.0 mpg (US) ...


  4. The Following 2 Users Say Thank You to MetroMPG For This Useful Post:

    MrMicra2015 (09-28-2018),Nobuseri (08-21-2018)

  5. #3
    Senior Member MrMicra2015's Avatar
    Join Date
    Aug 2016
    Location
    Vancouver BC
    Posts
    414
    Thanks
    72
    Thanked 53 Times in 40 Posts
    maybe....

    https://www.amazon.com/ABN-Spark-Soc...ustomerReviews

    The body is 18mm but there is a little collar thats19.56mm (.772").

    About ABN Thin Wall 14mm 12-point Spark Plug Socket BMW 3/8 Inch Drive

    Product Description

    The ABN Thin Wall Spark Plug Socket is a must have tool for anyone working on BMW engines. It is designed to keep the plug inside the socket during install and removal with metal retainers. The tool also works with some Nissan and Toyota engines.
    A Closer Look

    Specifications

    The spark plug socket is constructed from Chrome Vanadium Steel (CR-V) for superior strength and durability.

    Use with 3/8-inch drive
    14mm with 12 points
    Overall length 2-1/2 inches

    Trusted Design

    The socket features metal retainers to keep plug inside the socket throughout the install and removal process. The metal retainers provide a stronger hold and longer durability.


    or 3.31 USD!!
    https://www.ebay.com/itm/14mm-12-Poi...AAAOSwn3VaouUp
    Last edited by MrMicra2015; 08-26-2018 at 07:24 PM.
    2015 Micra S (manual)
    no A/C /no power options
    Feb 2015 build
    9,999 purchase price + tax..no additional 1600$ because it was a 2015 purchased in 2016
    so receipt says $8,399....+1600 .... so they look good i guess...for a brand new car!

  6. The Following User Says Thank You to MrMicra2015 For This Useful Post:

    Pete (08-27-2018)

  7. #4
    Senior Member Nobuseri's Avatar
    Join Date
    May 2016
    Location
    Montreal, Quebec
    Posts
    229
    Thanks
    26
    Thanked 108 Times in 71 Posts
    Oh thanks, looks like there's cheaper sockets. Tool wasn't mine anyway.



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •