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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 Wed, Feb-28-2007, 02:36:20 PM   #11
desaille
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Very nice.

This is a Triple DIY
- Replace Microfilter
- Replace Engine Cover
- Replace Spark plugs
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Old Wed, Feb-28-2007, 06:38:59 PM   #12
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Excellent write-up. Love the detail pics.

When you say strip the plug (which you are removing) I assume you mean break it - ie. snap the top part off. If so that is not a big deal as you are going to throw it away. I have broken more than one over the years. Stripping the threads putting it back in is a concern but as you state, start it carefully by hand. Very difficult to strip a thread by hand (unless you are the CA gov). I use a rubber tube the hold end of the the plug while starting it. Gives you the same feel as with your fingers.

22 ft/lbs - is that the OEM spec? Seems a bit high. Will be tough getting those out again. I don't like to use more than 18 with an AL head.
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Old Wed, Feb-28-2007, 07:01:42 PM   #13
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Originally Posted by ff1600 View Post
Excellent write-up. Love the detail pics.

When you say strip the plug (which you are removing) I assume you mean break it - ie. snap the top part off. If so that is not a big deal as you are going to throw it away. I have broken more than one over the years. Stripping the threads putting it back in is a concern but as you state, start it carefully by hand. Very difficult to strip a thread by hand (unless you are the CA gov). I use a rubber tube the hold end of the the plug while starting it. Gives you the same feel as with your fingers.

22 ft/lbs - is that the OEM spec? Seems a bit high. Will be tough getting those out again. I don't like to use more than 18 with an AL head.
I mean rounding off the corners on the plug while its still in the head because its seized in the head...just threw that out there as a warning.

I usually use 18 too but I read multiple threads here that stated 22ft/lbs...
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Old Wed, Feb-28-2007, 07:40:09 PM   #14
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im not familiar with the spark plugs that m3's use, but in my other experience with spark plugs, they need to be properly gapped unless they are pre-gapped. are these plugs pre- gapped?
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Old Wed, Feb-28-2007, 08:22:41 PM   #15
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Almost all plugs come pre gapped these days, but I would still recommend checking the gaps before they go in.
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Old Wed, Feb-28-2007, 09:16:21 PM   #16
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I just wanted to say, I actually drove the car today after doing the spark-plugs, and its MUCHHHHHH smoother....Don't know about faster, but revs are so much easier and free...definitely replace your spark-plugs if you haven't in 60K miles
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Old Sat, Mar-17-2007, 01:06:15 AM   #17
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thanks for the diy man!
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Old Sat, Mar-17-2007, 02:13:43 AM   #18
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Quote:
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I just wanted to say, I actually drove the car today after doing the spark-plugs, and its MUCHHHHHH smoother....Don't know about faster, but revs are so much easier and free...definitely replace your spark-plugs if you haven't in 60K miles
I guess you haven't had Inspection II yet? That should be due soon?

Thanks for the DIY, very good write-up. So how many sparkplugs do I need to buy? j/k
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Old Fri, Mar-23-2007, 06:02:32 AM   #19
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the way your old plugs looked, all brown and briny, are those still good for another 100K miles?

Im just wondering, if they look like those did, are they ont he way out?
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Old Sun, Apr-01-2007, 06:39:05 PM   #20
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The oil on the one plug could be from the valve cover gasket leaking around the plug tunnel. It will soil the plugs but should not effect performance. You may not pass smog test if your subject to that where you live.

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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)