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Subject: Replaced my Spark plugs this weekend. I think 100K service maintenace is Author: rg0115 : member since May, 2007 : 2457 posts Posted on: 2008-10-27 22:49:09

stretching it for the OEM plugs. Mine definitely showed some aging after 77k miles. Anyway, as some of you recall from an earlier post Linky I have been debating whether I should change spark plug after 77k miles. On occasions it felt like I might have been getting some misfire. My car is an 2001 and they have never been changed. Anyway, I went ahead and pick up some plugs this weekend from Kragen and went at it. Thanks for the advise from everyone on my earlier post. I have to say this is a very easy DYI. I got all I needed from e38.org. I used .
Jay in Florida's write Here are some pictures from my install.

First I removed the engine cover by pressing down on the 4 little circles on top. That was just to easy.


Here it is removed


Next I, removed the side cover to get to the coils and plugs. I just remove the 2 bolts on each side with a 10mm socket


Next make sure to lable the coils so you can put them back together the way you took it apart. I guess this step is important since it will cause problems down the road. Regarless, I wasn't going to find out.


Next lift up the little clips to release the wiring harness from the coil.




Next remove all the bolts holding down the coils. Also 10mm








Here is a picture of the spark plugs. There was little bit of oil but not much. I had my valve covers repalce and valley pan a few month ago, so most likely from that.




Next un screw the plugs. Mine were in there pretty tight, but nothing a little muscle would get out. Here is a picture of the old plug.




Old and new next to each other. Notice the part number on the box, i went with the NGK instead of the Bosch. I am sure the Bosch would work just as good.


Grease up the thread with a little Anit-seize and but everything back together the way you took it apart.


I tightened the plugs with a torque wrench at 21-23 lbs. and voila, back in there.


The car fired right up and definitely is running smother. I cheap and simply way to keep your car up to par.


2001 740IL My black beauty

• Replaced my Spark plugs this weekend. I think 100K service maintenace is (pic) (url) - rg0115 2008-10-27 22:49:09 (394 views)
  • that makes me want to do mine, I don't even want to know what they look like... - 04sshd 2008-10-29 01:45:49 (17 views)
  • Nice job Robert! Just my 2ct here Bosch and NGK are both OEM in ETK - Edwin™ 2008-10-28 05:14:48 (65 views)
    • your 2 ct are appreciate. I totally agree with you. that's why I change them (nt) - rg0115 2008-10-28 11:14:22 (17 views)
  • I was just about to ask you about that project! Do you notice a difference with - Wiggi 2008-10-28 00:06:11 (35 views)
    • Didn't take very long at all, I' (nt) - rg0115 2008-10-28 00:35:56 (20 views)
      • Give yourself about an hour to do it. I didn't use the on board tool, I had one - rg0115 2008-10-28 00:40:20 (37 views)
  • Well done ! Why NGK when Bosch was oe? just curious since I went with Bosch. - Krazy D 2008-10-27 23:48:06 (33 views)
    • NGK was OE on my 2001 740il - they still looked good when replaced at 100k mi (nt) - stritarja 2008-10-28 08:54:09 (16 views)
    • The NGK's run one temp colder than the Bosch - at least the OEM's for a M60 do (url) - RobinK 2008-10-28 08:23:01 (56 views)
      • Good job, but why the concern of coil order? They're all the same... (nt) - visionbmw7 2008-10-29 01:08:56 (22 views)
    • Honestly I heard nothing but good things about NGK, also BMW of San Diego - rg0115 2008-10-28 00:35:09 (29 views)
  • Nice detail, great photos! - Shled 2008-10-27 23:36:09 (15 views)
  • Ya couldn't wait til this weekend, eh? j/k! - IBHenry® 2008-10-27 23:20:23 (18 views)
    • OEM was Bosch. (nt) - rg0115 2008-10-27 23:32:22 (19 views)
  • Nice detail. Doing mine this weekend. (nt) - Ed 2008-10-27 23:03:51 (16 views)