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      04-23-2013, 02:40 AM   #1
JinLee09
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Changing out spark plugs!

Im trying to change my own spark plugs since my indy shop wants to charge me $210. It seems very easy by looking at DIY. So here is my question. Im using bosch instead of oem bmw spark plugs (Think its same), I've noticed bosch spark plugs torque setting is at 20nm and bmw is at 23nm. Can anyone tell me what torque setting i should torque to? Thank You.
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      04-23-2013, 04:43 AM   #2
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I would torque them to bmw spec, dont forget anti seize lube.
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      04-23-2013, 06:43 AM   #3
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most plugs need to be snug, but not too tight...there should be a crush washer at the top of the threads...this washer gets squished when you torque the plugs down. You will get a feel for it on the second plug and eventually not even need torque specs....but.....since its a bimmer and if you have a torque wrench that will read low setting like that, have at it!
and yes, a little anti seize compound is a good idea as we dont change plugs as often as we used to..

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      04-23-2013, 07:53 AM   #4
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forget what shata said. Don't use antisieze and hand torque the spark plugs carefully- tight but not super tight
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      04-23-2013, 08:10 AM   #5
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I didn't use any anti-seize. The torque spec is relatively low so it should have any issues coming out. I too used the BOSCH branded spark plugs with no issues. Heck, even the original BMW ones have the BOSCH part number inscribed on them.

I just torqued it down to 18ft/lb and called it a day. Pretty easy and straight forward.
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      04-23-2013, 08:12 AM   #6
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Quote:
Originally Posted by JinLee09 View Post
Im trying to change my own spark plugs since my indy shop wants to charge me $210. It seems very easy by looking at DIY. So here is my question. Im using bosch instead of oem bmw spark plugs (Think its same), I've noticed bosch spark plugs torque setting is at 20nm and bmw is at 23nm. Can anyone tell me what torque setting i should torque to? Thank You.
20 or 23Nm is not significant, IMO. You won't have problem with either.
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      04-23-2013, 08:13 AM   #7
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Quote:
Originally Posted by SoIntoYou View Post
forget what shata said. Don't use antisieze and hand torque the spark plugs carefully- tight but not super tight
Correct, never use antisieze on these plugs.
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      04-23-2013, 08:17 AM   #8
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Yep no antisieze and its extremely easy to diy. took me maybe 15 mins
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      04-23-2013, 08:32 AM   #9
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The alloy head wont need anti-seize. Just don't over torque them and strip your head.
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      04-23-2013, 12:15 PM   #10
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Great! Thanks guys!!
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      04-23-2013, 12:19 PM   #11
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Yes, from my service manuals to my Bentley guide... no anti seize.

Spark plugs on this car are such a cake walk compared to my previous car (05 STi).
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      04-26-2013, 03:02 AM   #12
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Any need to reset any spark plug adaptation? I've noticed that I get a light vibration in the steering wheel @ idle and RPMs are at about 600 when idling.

I bought my bosch plugs for $70 online and had my indy install it for $50 a year ago
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      04-26-2013, 09:39 AM   #13
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speaking of plugs, what's the interval on changing them on a 335 ?
sorry to thread jack
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      04-26-2013, 10:38 AM   #14
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Quote:
Originally Posted by JinLee09 View Post
Im trying to change my own spark plugs since my indy shop wants to charge me $210. It seems very easy by looking at DIY. So here is my question. Im using bosch instead of oem bmw spark plugs (Think its same), I've noticed bosch spark plugs torque setting is at 20nm and bmw is at 23nm. Can anyone tell me what torque setting i should torque to? Thank You.
You need a thin wall socket to get the plugs out as well. A normal one will not work. I hand tightened mine, no anti-seize. Took about 1.5 hrs and could've been done faster.

Quote:
Originally Posted by fazman View Post
Any need to reset any spark plug adaptation? I've noticed that I get a light vibration in the steering wheel @ idle and RPMs are at about 600 when idling.

I bought my bosch plugs for $70 online and had my indy install it for $50 a year ago
I'm pretty sure adaptions do not need to be reset. I didn't reset mine, and from what I have read it is not necessary. ECU recoginizes plugs and adjusts pretty quickly from what I have read. I didn't have any issues when I replaced mine. I occasionally get a slight misfire at idle. Like a plug or injector going bad...
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      04-26-2013, 11:38 AM   #15
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Quote:
Originally Posted by 2kaccordocoupe View Post
speaking of plugs, what's the interval on changing them on a 335 ?
sorry to thread jack
stock? 35-45k miles maybe more

tuned? 15-25k max.
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      04-26-2013, 11:53 AM   #16
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Quote:
Originally Posted by idrift4wd View Post
stock? 35-45k miles maybe more

tuned? 15-25k max.
thanks
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      04-26-2013, 11:55 AM   #17
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i believe i use 19ft/lbs no anti-seize. $210 is insane lol i can do it in 30 minutes.
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      04-26-2013, 12:42 PM   #18
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Originally Posted by iBoost View Post
i believe i use 19ft/lbs no anti-seize. $210 is insane lol i can do it in 30 minutes.
Thats what im saying lol.
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      04-26-2013, 01:13 PM   #19
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I just did this last week. never should cost $210... I say no more than a 6-pack, and it can even be miller lite, not even premo stuff.
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      04-26-2013, 05:45 PM   #20
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Quote:
Originally Posted by idrift4wd View Post
stock? 35-45k miles maybe more

tuned? 15-25k max.
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      04-27-2013, 01:09 AM   #21
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I also just changed my plugs two weeks ago. It was super easy with the right tools and took about 15 minutes of my time. I torqued them down to the correct setting and did not use any anti-seize gel or lubricant. It's been running perfect. I replaced them at about 30k miles and probably should have done it sooner. This is the third set of plugs and I used the Bosch.
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      04-27-2013, 01:51 AM   #22
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My sparkplugs were changed by the BMW mechanic during the 6oo dollar service + inspection (!) and I was there all the time and watched him do it. No antiseize, no torque wrench. I then a few weeks ago changed sparkplugs in my wife's toyota aygo and used torque limiting wrench to tighten the plugs to 23 NM and having got the feel for it I am sure that if you have the feeling, you don't really need the torque wrench. You will feel the washer squeeze tight and then just a little bit more and no more, stop.

By the way "Denso-toyota" explicitly mentions in their webb site "No anti seize". It is out of fashion. The spark plugs are so cheap that you replace it every time instead of re-aligning and re using them so why anti seize? It messes up the torque technique. Chances are you will over torque and crack the plug or the thread.
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