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6 Series
The BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 03-14-2010, 07:27 PM
joepipe joepipe is offline
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Question Sparkplug change time

Hey Guys, Do any of you use NGK sparkplugs instead of the stock Bosch Platinum ?

I heard NGK might make idling smoother ?
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  #2  
Old 03-14-2010, 07:59 PM
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BlaZinMJ3 BlaZinMJ3 is offline
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buy the stock. BMW uses them for a reason
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  #3  
Old 03-15-2010, 02:07 AM
Koenvw Koenvw is offline
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Yes they use the stock one because they spark...

Or because they get better price from Bosch because it's olso German?
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  #4  
Old 03-15-2010, 08:25 AM
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ok then buy NGK, who the hell cares
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  #5  
Old 03-15-2010, 10:28 AM
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im with blazin i think they built a fine vehicle other then cosmetics i wouldnt fiddle with it
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  #6  
Old 03-15-2010, 12:52 PM
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Quote:
Originally Posted by Bk650 View Post
im with blazin i think they built a fine vehicle other then cosmetics i wouldnt fiddle with it
lol thank you! i was giving a suggestion. i dont think different spark plugs in an $80k will make much of a diff. BMW knows what they're doing.
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  #7  
Old 03-16-2010, 08:08 PM
docpaulo docpaulo is offline
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Quote:
Originally Posted by joepipe View Post
Hey Guys, Do any of you use NGK sparkplugs instead of the stock Bosch Platinum ?

I heard NGK might make idling smoother ?
I don't really have an idling problem so if it ain't broke... try and fix it...

really, it's a BMW... they wouldn't save much money by saving 10 dollars on 8 spark plugs... either way the car is factory spec using OEM plugs... NGK plugs may be better on paper, but it's about how the car makes use of the difference... and in a car with wide tolerances there may be room to improve... our car is built to exacting tolerances...

but if you do want to try... let us know how it goes...

probably won't hurt...
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  #8  
Old 03-17-2010, 04:00 AM
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Quote:
Originally Posted by blazinmj3 View Post
Lol thank you! I was giving a suggestion. I dont think different spark plugs in an $80k will make much of a diff. Bmw knows what they're doing.
+1
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  #9  
Old 04-04-2010, 08:27 PM
brown370 brown370 is offline
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I changed my stock NGK +4 plugs with Bosch Iridium +4 plugs at 78K miles. $8.99 each at AutoZone. Improved my idle.
The plugs looked bad, I'm glad I didn't wait til 100K miles like BMW recommends. I haven't checked my gas mileage yet to see if it improved.
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  #10  
Old 04-07-2010, 02:16 PM
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NGK all the way, i have it myself and no issues at all
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  #11  
Old 04-12-2010, 04:01 AM
brown370 brown370 is offline
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My gas mileage has improve from 320 miles to 375 miles per tank with the new Bosch Iridium + 4 plus. 90%Hwy cruising at 78 mph.
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  #12  
Old 04-12-2010, 04:18 AM
brown370 brown370 is offline
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Per my BMW service advisor. BMW 6 series come with OEM NGK and Bosch plugs. Both plugs are used as replacements by dealerships. They use what the parts department orders and has in stock. Also, guys remember these care were made starting in 2003 German/UK versions. Improvements in plugs, oils, hoses etc...have be made since then.
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  #13  
Old 09-17-2010, 11:25 AM
hipertec hipertec is offline
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Hate to bring up an old thread but I am having idling problems. Thinking its time to change the spark plugs. Does anyone have a manual or link to change the plugs on a 645ci? Also is it hard to get to them?
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  #14  
Old 09-17-2010, 08:19 PM
brown370 brown370 is offline
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The plugs on a 6 are a pain to change but, you can do them with a little patience. I removed the cables for jump starting the car on the drivers side and move the coolant container and power steering on the passenger side. There are a couple rubber plugs on the passenger side that will help you access the rear plugs on the passenger side.

I used the following
spark plug socket
4 inch extension
universal joint (a wobble extension may work too)
12" extension
rachet
Note: You will need to visit Sears and buy a inner torx set to get the special torx screws out holding the coils on.
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  #15  
Old 09-18-2010, 05:57 AM
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BMW spark plugs are NGK under the BMW name...... look at the old plug and you will see the ngk name on the ceramic....
when you come to change the plugs you will see why BMW charge a fortune in labour cost to replace them, to remove the rear plugs you dont have to strip everything down, but to use small multi angle (2 of) plus the socket as the key is to angle the socket to remove, I learnt this from a panic experience !! When removing the left hand side plug you have to unbolt the air conditioning pipe and gently push out of the way, Feels odd to do but that is what is in the BMW TIS manual to complete this.......

Last edited by 645/333; 09-18-2010 at 06:02 AM.
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  #16  
Old 09-18-2010, 08:39 AM
hipertec hipertec is offline
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thanks for your suggestions...where can I get or print the BMW TIS Manual and what is a multi angle plus socket?
also does anyone have any pictures or links to share on the R&R process?
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  #17  
Old 09-18-2010, 08:55 AM
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A TIS manual plus a parts list ETK can be bought on ebay for approx $20. These are complete manuals and parts list for all BMW cars across the globe. Many different sellers with a few with proper manuals and how to install on PC. Worth having as a reference without being technical. Can see if garages are BS on charges as you can see what it takes !!!
A multi angle socket is one which allows the socket wrench to move through at least 90's, go to any tools shop you will see one, sometimes called an extension piece. Get one to fit socket set !!
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  #18  
Old 11-01-2011, 12:36 PM
vegas645 vegas645 is offline
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Sparkplug question

I went to my Indy for a quote on changing the sparkplugs. He quoted me $285 using Bosch. I asked him about using NGK and he said for the same price.

Is $285 a fair price or should I expect to pay less?? He said it would take 2.5 to 3.0 hours because of the plugs next to the firewall. The reason they put the engine so close to the firewall is to give it more torque.

Should I use Bosch or NGK?

She has 100,100 miles on her and runs like a top, is there anything I should have him look at or replace while he is changing the plugs?


I would change the plugs myself but I have read where the plugs by the firewall are a bitch to get at and I don't want to attempt it. I am sure the dealer charges more than $285 and so far my Indy guy has been up front with me when doing some work on my wife's 07 328.

Thanks for the feedback
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  #19  
Old 11-01-2011, 12:41 PM
ThoreauHD ThoreauHD is offline
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Do it yourself and find out what the fuss is about. The worst thing that can happen is failure to access the plug. The best thing is your car runs like new, you learn something, and you get to keep $300.
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  #20  
Old 11-01-2011, 01:02 PM
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It sounds like a complete pain in the butt to change the rear two plugs according to everyone who has done it. If you are handy and very patient then maybe give it a try. Otherwise $285 is a very fair price to change the spark plugs, if my mechanic only charged that much I'd let him do it. The plugs alone are $24 each at the dealer, or $19 each at Tischer.

I would highly recommend the NGK over the Bosch plugs.
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Last edited by Yorgi; 11-01-2011 at 01:04 PM.
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  #21  
Old 11-01-2011, 01:29 PM
vegas645 vegas645 is offline
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Thanks guys.
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  #22  
Old 11-01-2011, 01:56 PM
vegas645 vegas645 is offline
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I just called the dealership out of curiosity and they told me $597.88.
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Old 11-01-2011, 03:14 PM
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Somehow I don't see Yorgi having someone else change his plugs.

Seriously, number 4 and 8 plugs aren't that bad to remove. There is only a little interference from the fuel and A/C lines if I remember correclty.

I do recommend changing the coils while your at it with that many miles. A set will run you about $370.
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  #24  
Old 11-01-2011, 03:18 PM
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+1 with Yorgi on the NGK plugs, which is the brand that BMW actually use. As far as doing the job yourself, there is plenty of info on how to do the rear plugs, but at the price your Indy is charging why get the fingers greasy? As far as doing the plugs for the first time at 100K, well haven't you done well!! BMW normally set 67K for a change of plugs.
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  #25  
Old 11-01-2011, 04:25 PM
vegas645 vegas645 is offline
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I am not sure if the plugs were done at 67K. I bought her as a CPO at 79K. My idrive alerted me that the plugs were due so I assume the dealer changed the plugs and reset the idrive.
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