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Faults, Fixes and DIY Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix!


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Old Sat, Nov-21-2015, 12:03:01 AM   #151
Mel279
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Default Re: DIY: E46 M3 Spark-Plugs with Pictures

hi

I added a video DIY spark plug change for better understanding, thats not me..just got it from youtube

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Old Thu, Jan-24-2019, 04:56:58 PM   #152
VdeZ
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Default Re: DIY: E46 M3 Spark-Plugs with Pictures

Hopefully going to be tackling this job tonight if I get out of work early enough. Can anyone chime in on approx. how long this job usually takes? For what it's worth, I'm relatively new to DIYing, but consider myself reasonably handy.
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Old Thu, Mar-21-2019, 01:06:19 AM   #153
calrick02
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Default Re: DIY: E46 M3 Spark-Plugs with Pictures

Great revival of an old thread!
If you have all your tools and plugs ready, you should be able to do them in 30-60 minutes. If you're a newbie to diy stuff, read the posts and take your time. Better to do it right the first time than to mess something up and have to redo it.
A few suggestions:
1) Don't use antiseize on the plugs. It'll mess up the plug ground and give you improper torque readings when installing them.
2) use a screwdriver or ratchet extension to pull off the coils after you flip up the plastic retainers. It's much easier than trying to do it by hand.
3) I torque the plugs to 18 ft/lb. Than is more than enough to hold them in and compress the crush washers and reduce the risk of stripping out the threads in the aluminum head.
4) I use a thin layer of dielectric grease on the inside of the coil boots so they won't be as hard to get off the next time I change the plugs.
5) from what I've read, the Iridium plugs will give you better performance when new compared to the oem plugs. However, they need to be replaced more often to keep them at optimum performance.
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Old Thu, Mar-21-2019, 01:19:20 AM   #154
VdeZ
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Default Re: DIY: E46 M3 Spark-Plugs with Pictures

Quote:
Originally Posted by calrick02 View Post
Great revival of an old thread!

If you have all your tools and plugs ready, you should be able to do them in 30-60 minutes. If you're a newbie to diy stuff, read the posts and take your time. Better to do it right the first time than to mess something up and have to redo it.

A few suggestions:

1) Don't use antiseize on the plugs. It'll mess up the plug ground and give you improper torque readings when installing them.

2) use a screwdriver or ratchet extension to pull off the coils after you flip up the plastic retainers. It's much easier than trying to do it by hand.

3) I torque the plugs to 18 ft/lb. Than is more than enough to hold them in and compress the crush washers and reduce the risk of stripping out the threads in the aluminum head.

4) I use a thin layer of dielectric grease on the inside of the coil boots so they won't be as hard to get off the next time I change the plugs.

5) from what I've read, the Iridium plugs will give you better performance when new compared to the oem plugs. However, they need to be replaced more often to keep them at optimum performance.
I ended up following the guidelines based on a few separate DIYs and got everything replaced without issue. Thank you for the additional tips! Looks like they pretty much match what I followed.

Sent from my SM-G955U using Tapatalk
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Discussing DIY: E46 M3 Spark-Plugs with Pictures in the Faults, Fixes and DIY Forum - Please share your experience and knowledge with other members by contributing your own DIY, or by helping another member find the elusive fix! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)