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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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  #26  
Old 11-01-2011, 05:30 PM
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petriej petriej is offline
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I swapped in NGKs for my 328iC and must have over tightened one. Took it to my trusted indy to remove and he replaced them with Bosch. Said the NGKs never did well for him so he always uses Bosch. Charged me less than $200. $285 seems high, but maybe labor in LV, NV is higher than Silicon Valley.
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Jared, why don't you just put "It's Giubo" in your sig? Save a lot of typing.
Quote:
Originally Posted by e36 miguel View Post
this jared guy sounds intimidating lol.
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  #27  
Old 11-01-2011, 05:42 PM
vegas645 vegas645 is offline
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The price of $285 includes a comped dinner Buffet for 2 and a show, that's how we do it here in Vegas!!!
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  #28  
Old 11-01-2011, 06:21 PM
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Quote:
Originally Posted by petriej View Post
...Charged me less than $200. $285 seems high, but maybe labor in LV, NV is higher than Silicon Valley.
The 6er has 2 extra spark plugs, so that's $40 right there. Plus more labor - 2 engine covers to remove vs 1 and less room by the firewall. My 330Ci plugs were a piece of cake to change.

The general consensus is NGK plugs perform better than Bosch but Bosch last longer. Note all the M cars use only NGK while the lower performance engines typically spec both NGK and Bosch.

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Originally Posted by vegas645 View Post
The price of $285 includes a comped dinner Buffet for 2 and a show, that's how we do it here in Vegas!!!
lol...
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Last edited by Yorgi; 11-01-2011 at 06:22 PM.
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  #29  
Old 11-01-2011, 06:45 PM
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petriej petriej is offline
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$20 spark plugs are a bit tough to swallow, but at shop/dealer rates are probably par for the course.
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Quote:
Originally Posted by hornhospital View Post
Jared, why don't you just put "It's Giubo" in your sig? Save a lot of typing.
Quote:
Originally Posted by e36 miguel View Post
this jared guy sounds intimidating lol.
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  #30  
Old 11-01-2011, 07:39 PM
Zeke77 Zeke77 is offline
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Question on this topic: Unless I'm missing a few pages (or just blindly missing the obvious, which has been happening more than I'd like lately....) I don't seem to find a specific spark plug change interval suggested in the manual. Where does it say 100k miles? I know we have the on-board service indicator lights, but....I like to keep just slightly ahead of the maintenance schedule if I can.

Here is my exact question: Is the need to change spark plugs driven solely by mileage, or is time also a factor? My 2007 still has less than 40k on it, and I baby it with 90% highway miles. Still, the plugs/coils are now approaching 5 years old. No service lights to date. Do I wait for them to come on, or is it time to pro-actively replace them?
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Last edited by Zeke77; 11-01-2011 at 07:41 PM.
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  #31  
Old 11-01-2011, 08:26 PM
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Yorgi Yorgi is offline
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Quote:
Originally Posted by Zeke77 View Post
... Where does it say 100k miles?....
That comes from the Service and Warranty booklet that comes with the car. You can download a .PDF copy here if you don't have one. The Owner's Manual is also available on that site.

Quote:
Originally Posted by Zeke77 View Post
Here is my exact question: Is the need to change spark plugs driven solely by mileage, or is time also a factor?...
It's strictly mileage, time has no effect on the condition of the plugs. That being said, if your car is not running well (eg: misfires caused by bad sensor, running on cheap gas, oil leak) then the plugs can be damaged after a few thousand miles.
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  #32  
Old 11-01-2011, 09:08 PM
Zeke77 Zeke77 is offline
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Ahh, yes....thanks Yorgi. I have the Service & Warranty booklet and found it on page 6. I was looking at the manual only. Thanks for the tips.
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  #33  
Old 11-01-2011, 10:02 PM
brown370 brown370 is offline
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The plugs are not that hard to change.
1. Remove the cabin filters and the housing.
2. Remove the top engine cover
3. Remove the side engine covers,
Passenger side
4. Remove the 2 each 10mm nuts on the power steering tank (lift to move out the way and disconnet sensor on the bottom)
5. Remove the 2 torx screws on the coolant tank (lift and move out the way and disconnect the sensor on the bottom).
6. You can access the rear plug on the passenger side by removing the plastic cover under the wiring harness 3 each 10 mm screws
7. Remove the 2 each 10mm nuts on the A/C lines. Slide the line off the 2 side post and push it down while removing the rear plug. Use a handle on a hammer to force it down.
As for the driver's side,
8. Disconnect the battery 10 mm nut (negative side)
9. Remove the grey plastic nut on the drivers side holding the protective cover for the battery cable to the side wall.
10. Disconnect the two battery cable from the terminal. This will give you the clearance to remove the rear coil. Just remember there is only 3 milimeters of clearance to remove the rear coils, ensure the tops are closed, and ensure the part of the coil that opens out is facing the rear of the engine when removing.

About two hours total time I have did this job on 3 BMW 645s and 1 BMW 545.
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Last edited by brown370; 11-01-2011 at 10:04 PM.
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  #34  
Old 11-02-2011, 03:59 PM
pmathis pmathis is offline
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I like this post and I think I'll give this a try. 110k miles so its way past due. How do I GAP the plugs and is there anything else I should know before diving in. I'm pretty handy but I've never done this.
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  #35  
Old 11-02-2011, 04:40 PM
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Quote:
Originally Posted by pmathis View Post
I like this post and I think I'll give this a try. 110k miles so its way past due. How do I GAP the plugs and is there anything else I should know before diving in. I'm pretty handy but I've never done this.
Thankfully they are pre-gapped. You just open the box, put on a little bit of anti-seize paste on the threads and screw them in.
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  #36  
Old 11-02-2011, 08:32 PM
brown370 brown370 is offline
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Put anti-sieze on the plugs.
Always install the plugs by hand ( to prevent cross-threading)
If you do not have a torque wrench, after tightning by hand, tighten with a wrench another 1/8th of a whole turn and you should be good.

Note: ensure you have a extension that will reach the plug. After removing the first coil, check then. I tape the socket and extension together to keep them from seperating, while pulling the plugs out or after tightning the plugs.
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04 BMW 645 CiC Auto
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  #37  
Old 11-03-2011, 09:05 PM
hipertec hipertec is offline
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Brown, thank you for the steps. If u end up doing another 6, we all would love ifyou did a pic DIY.

Sent from my Transformer TF101 using Bimmer
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  #38  
Old 11-05-2011, 08:05 PM
Tosh.645ci Tosh.645ci is offline
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I use pulsestar plugs... They're not oem, and a bit pricey but they come highly recommended from those I know who used them. Do a search... There's some interesting reading on them.
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  #39  
Old 11-14-2011, 05:38 PM
Blaknificent Blaknificent is offline
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Hey Yorgi!

I was resetting the oil light and accidentally reset the sparkplugs to 15K....what is the proper mileage spark plugs should be set at? I just had all coils and plugs replaced 6k miles ago...

Thanks!
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  #40  
Old 11-14-2011, 05:42 PM
brown370 brown370 is offline
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100,000 miles
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04 BMW 645 CiC Auto
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  #41  
Old 11-14-2011, 05:45 PM
Blaknificent Blaknificent is offline
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Thanks! I got it reset. I love this forum.

Last edited by Blaknificent; 11-14-2011 at 06:40 PM.
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  #42  
Old 11-14-2011, 06:33 PM
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EmM HoLLa EmM HoLLa is online now
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So is there a consensus on when to actually change the plugs?.. 100k?.. Or sooner?..
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  #43  
Old 11-14-2011, 06:38 PM
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petriej petriej is offline
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It's huge, like 50k or something.
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Quote:
Originally Posted by hornhospital View Post
Jared, why don't you just put "It's Giubo" in your sig? Save a lot of typing.
Quote:
Originally Posted by e36 miguel View Post
this jared guy sounds intimidating lol.
2005 X5 4.8is Le Mans/Black/6spd Steptragic
1999 M3 Cabrio TiAg Metallic/Dove Grey/Black 5 Speed Manual
-------------------------------------------------------------------
1997 328iC Schwarz II/K/K 5MT SOLD 5/2012
2004 645Ci Mineral Silver Metallic/Black 6MT RIP 04/2011
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  #44  
Old 11-14-2011, 07:55 PM
ProRail ProRail is offline
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Quote:
Originally Posted by petriej View Post
$20 spark plugs are a bit tough to swallow, but at shop/dealer rates are probably par for the course.
Sounds pretty cheap to me, unless you change every 20K. (Even then it's not that bad.)
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  #45  
Old 11-14-2011, 08:46 PM
brown370 brown370 is offline
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I used the Bosch Iridium Plugs $8 each vs $20 each for OEM plugs.
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12 VW CC 2.0T [/B] stock
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(Previous rides)
04 BMW 645 CiC Auto
97 VW Jetta Jazz 5 SPD
06 Mazda 6 Grand Sport Auto
05 BMW X5 3.0 6 SPD
05 Infiniti G35 6 SPD
04 Volvo S60 "R" 6 SPD
99 Nissan Maxima 5 SPD
91 Nissan 300ZX 5 SPD
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  #46  
Old 11-14-2011, 08:49 PM
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Originally Posted by ProRail View Post
Sounds pretty cheap to me, unless you change every 20K. (Even then it's not that bad.)
The problem is not the overall cost, it's the fact that BMW charges 130% more than your average retail for these plugs. Paying $100 more for 8 plugs at the dealer vs online is a little annoying.
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  #47  
Old 11-15-2011, 03:50 AM
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645/333 645/333 is offline
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When I changed my plugs and reset them the idrive reset changed to 75000 miles. I did the procedure correctly so I think that this must be the mileage the plugs are set to for my car. If you look at your vehicle service data you will see the condition based mileage numbers for each item, ie plugs oil, filters etc.
The interesting things was my plug interval dropped very quickly to 67000 miles and I have not driven more than 3k from when I first installed them.
There are the recommended change windows for each vehicle (in the vehicle/service data in the idrive) and will not be the same for every car as we all drive them differently.
I know that many ignore these numbers and prefer to change when they feel the need, especially oil intervals.
I personally like to keep my car operating within what I feel is the optimum window so will definitely change some things a lot earlier, brakes! plus plugs being one of them which I did change at 50K. Lets bear in mind that this could equate to 5 years driving ie one set of plugs in 5 years.....
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  #48  
Old 02-12-2013, 01:48 PM
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reytran reytran is offline
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Originally Posted by vegas645 View Post
The price of $285 includes a comped dinner Buffet for 2 and a show, that's how we do it here in Vegas!!!
But besides the Strip, rest of the city cost of living is pretty fair compare to California. I stayed there for a month before. There is 1 thing annoy me the most is I can't find a carwash, where there is more carwash than 7-Eleven here. It was fun staying in Vegas though.

Btw, I will try to call some Indy around my area to check the price for sparkplug change. It sounds like I'm not for DIY this then.
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  #49  
Old 02-12-2013, 06:28 PM
brown370 brown370 is offline
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When I changed my plugs and reset my 645 iDrive. It reset to 100,000 miles.
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(Previous rides)
04 BMW 645 CiC Auto
97 VW Jetta Jazz 5 SPD
06 Mazda 6 Grand Sport Auto
05 BMW X5 3.0 6 SPD
05 Infiniti G35 6 SPD
04 Volvo S60 "R" 6 SPD
99 Nissan Maxima 5 SPD
91 Nissan 300ZX 5 SPD
92 Honda Prelude Si Auto
76 Fiat Spyder 124 5 SPD
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  #50  
Old 03-18-2014, 08:37 PM
DrPsyber DrPsyber is offline
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Part # please

Do you mind posting the part number for the spark plugs that worked for you?

I do see that the +4 works the best, but I am having a hard time finding the correct part #

Last edited by DrPsyber; 03-18-2014 at 09:02 PM.
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