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      05-30-2012, 05:23 PM   #45
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UPDATE:

I called Mark this afternoon at Northeast Motor Werks and he gave me the skinny on what he has found. First he ran the diagnostics and I still had misfire codes on 1,3, and 6.

He then pulled all of the plugs and found that many of them were already pretty beat up and dirty. (Keep in mind these were new plugs when I installed them on Saturday).

He checked gaps, verified they were OEM and reinstalled them. He started the car and it still misfired.

He then reset the ECU just to try that and still got the misfires.

He then swapped the ignition coil packs and the problem did not move with the packs.

Up to this point these are things I had already had done, but any good troubleshooter goes over all of it again IMO.

He had a brand new set of the OEM plugs in his shop so he pulled all of my new plugs and placed in his new plugsÖ.car fired right up and hummed like day 1.

So, this makes me feel good for a few reasons. For starters, it proves to me Iím not an idiot and knew what I was doing. Secondly it reaffirms the value of these forums.

Dackelone was right yet again. Iím not sure if Bavarian Autosport stores their spark plugs in a pool or a fire pit or if they simply got damaged in shipping but they didnít work. I can say with 100% accuracy they are the dealership sold OEM BMW plugs. I can also sayÖagainÖ they didnít work.

So the moral of the story is stop being a cheap ass like me and just drive to your local dealer (if you can) and hand carry those plugs out of there.

Thanks again guys! Iím getting the car back tomorrow probably as Iím having Mark do some other stuff. Heís great to work with and if anyone in CT is looking for an independent shop I would highly recommend him.
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      05-30-2012, 05:36 PM   #46
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Quote:
Originally Posted by takrdown View Post
UPDATE...

Thanks again guys!
Thanks for posting this update. It makes things easier for people in the future who change out their plugs.

I remember a Tech I used to work with who liked to say... "..Just because it is a new part doesn't make it a good working part!" So true.

I think there is just something weird about the N54/N55 engine needing OEM BMW/Bosch made plugs. There must be something that is different with the aftermarket Bosch plugs bc I have seen it posted before on the e90 forum that use of non BMW plugs can cause issues.

Thanks again Takrdown.
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      05-30-2012, 07:12 PM   #47
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Quote:
Originally Posted by Dackelone View Post
Thanks for posting this update. It makes things easier for people in the future who change out their plugs.
That's what these forums are all about right

I just want to stress to everyone that these were OEM plugs that didn't work. So...just because they are OEM plugs, don't rule them out if you start having misfires. Swapping them out is just good troubleshooting at this point.
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      05-30-2012, 09:22 PM   #48
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Quote:
Originally Posted by Dackelone View Post
Thanks for posting this update. It makes things easier for people in the future who change out their plugs.

I remember a Tech I used to work with who liked to say... "..Just because it is a new part doesn't make it a good working part!" So true.

I think there is just something weird about the N54/N55 engine needing OEM BMW/Bosch made plugs. There must be something that is different with the aftermarket Bosch plugs bc I have seen it posted before on the e90 forum that use of non BMW plugs can cause issues.

Thanks again Takrdown.
Apparently their are some small internal differences between the plugs, the BMW spec one is more robust. I have seen a cut away somewhere, If i can remember I will post it up.

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      06-12-2012, 04:39 PM   #49
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Great video
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      08-26-2012, 04:03 AM   #50
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very nice post!!!!!
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      10-01-2012, 07:58 AM   #51
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Amazing post

Just wanted to say thank you for this post. I don't know why, but I was hesitant to change the spark plugs in my '07 335i e90. I'm not sure what finally pushed me over to try it, but I'm pretty sure that the $390 the dealer was going to charge me had something to do with it. It was much easier than I thought and the car runs like a dream now.

Thanks again! Great post!
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      10-01-2012, 09:37 AM   #52
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Quote:
Originally Posted by Romanian nightmare View Post
Just wanted to say thank you for this post. I don't know why, but I was hesitant to change the spark plugs in my '07 335i e90. I'm not sure what finally pushed me over to try it, but I'm pretty sure that the $390 the dealer was going to charge me had something to do with it. It was much easier than I thought and the car runs like a dream now.

Thanks again! Great post!
Romanian nightmare - You are quite welcome. Btw what a great user name!!


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      10-02-2012, 12:11 AM   #53
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what torque wrench is best for tighning spark plugs ?
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      10-02-2012, 07:14 AM   #54
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so if we dont buy these plugs from the dealership direct, we getting inferior plugs? hmmm. is BMS selling bad bosch plugs?
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      10-02-2012, 07:20 AM   #55
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Quote:
Originally Posted by Da _Grk_Tuner View Post
what torque wrench is best for tightening spark plugs ?

Didn't you read my Spark plug DIY? They should be torqued to 23Nm.


135i Spark Plug replacement DIY...
http://www.1addicts.com/forums/showthread.php?t=602804
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      10-02-2012, 07:24 AM   #56
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Quote:
Originally Posted by romak47 View Post
so if we dont buy these plugs from the dealership direct, we getting inferior plugs? hmmm. is BMS selling bad bosch plugs?

Opinion is split on this. Read my Spark plug DIY... it was discussed somewhat on the last page(3). I have read many posts where people went with aftermarket Bosch plugs and had no problems. But then again I have read four or so posts and seen where people had a misfire issue do to (bad) spark plugs.

I decided to play it safe and just buy my sparkplugs at my local dealer.
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      10-02-2012, 09:26 AM   #57
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Quote:
Originally Posted by Dackelone View Post
Opinion is split on this. Read my Spark plug DIY... it was discussed somewhat on the last page(3). I have read many posts where people went with aftermarket Bosch plugs and had no problems. But then again I have read four or so posts and seen where people had a misfire issue do to (bad) spark plugs.

I decided to play it safe and just buy my sparkplugs at my local dealer.

FWIW, from Mike Miller's Old School Maintenance Guide:

Original BMW Bosch Spark Plugs vs. Aftermarket Bosch Spark Plugs

Like just about everything else on the modern BMWs, Bosch spark plug choice is complicated and confusing. The short answer is if you order the spark plugs from BMW (sometimes there is a choice between Bosch or NGK), then you are good to go and there is no confusion. But they are expensive.

Savvy enthusiasts have found that Bosch has a part number for commercially-available spark plugs that cross-references to the BMW original equipment Bosch spark plugs, often at a fraction of the price. The problem is, the commercially-available (aftermarket) Bosch spark plugs are not always the same as the original BMW Bosch plugs even though they cross-reference and they do work.

Dealership technicians report problems with the commercially-available Bosch Platinum +4 spark plugs in BMW engines. I have never seen this personally, but physical inspection does reveal differences in insulator design between the original BMW Bosch spark plugs for the modern cars and the commercially-available Bosch Platinum +4.

Weíre talking about the newer multiple-coil BMWs above. Now, when we're talking about older BMWs with a single ignition coil, where the original BMW specified spark plugs are Bosch copper or silver plugs, everything is completely different. On those cars, there is absolutely no difference between the original BMW spark plugs and commercially-available Bosch copper or silver plugs. I realize this requires a certain intimate knowledge of Bosch spark plugs, and I donít know what to tell you about that except to ask if you donít know, or just buy them from the dealer.
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      10-02-2012, 02:14 PM   #58
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Quote:
Originally Posted by Dackelone
Quote:
Originally Posted by Da _Grk_Tuner View Post
what torque wrench is best for tightening spark plugs ?

Didn't you read my Spark plug DIY? They should be torqued to 23Nm.


135i Spark Plug replacement DIY...
[intlink]602804;135i Spark Plug replacement DIY...[/intlink]
I know that . but what I mean is what tool torque wrench BRAND should I get I heard that there some that beep when it reads the amount of NM u set it to
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      10-02-2012, 03:04 PM   #59
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Quote:
Originally Posted by Da _Grk_Tuner View Post
I know that . but what I mean is what tool torque wrench BRAND should I get I heard that there some that beep when it reads the amount of NM u set it to
Some "beep" and some make a "click" sound - it doesn't matter which one you use. Old fashioned ones just a "beam" rods that move(bend) when you apply tq.

I bought one from Gedore(~100 euros). It works from 5 to 50Nm scale. It is best to use a tq wrench that the 23Nm is in the middle of its tq range. That way the wrench is more accurate in the middle of its range/scale. Hazet over here also makes good ones(~160 euros).
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      10-02-2012, 09:20 PM   #60
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Quote:
Originally Posted by Dackelone View Post
Some "beep" and some make a "click" sound - it doesn't matter which one you use. Old fashioned ones just a "beam" rods that move(bend) when you apply tq.

I bought one from Gedore(~100 euros). It works from 5 to 50Nm scale. It is best to use a tq wrench that the 23Nm is in the middle of its tq range. That way the wrench is more accurate in the middle of its range/scale. Hazet over here also makes good ones(~160 euros).

thanks
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      10-04-2012, 11:27 AM   #61
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haha, makes me wanna take a commercially available plug from out of my car and cut it open and compare to the ones i took out recently.
had misfire on 2 and 4 cylinder recently but never came back. Was maybe a hundred or so miles after i changed the plugs.. Curious.... hmmmm....
It sucks if i have to drive all the way to my dealers to get thesee. haha. like 1.5 hrs away. sheesh and gas aint cheap right now. :P
gotta make some calls.
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      10-04-2012, 11:58 AM   #62
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Quote:
Originally Posted by romak47 View Post
haha, makes me wanna take a commercially available plug from out of my car and cut it open and compare to the ones i took out recently.
had misfire on 2 and 4 cylinder recently but never came back. Was maybe a hundred or so miles after i changed the plugs.. Curious.... hmmmm....
It sucks if i have to drive all the way to my dealers to get thesee. haha. like 1.5 hrs away. sheesh and gas aint cheap right now. :P
gotta make some calls.
Why not order them and have the UPS man deliver the spark plugs.
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      12-01-2012, 11:15 PM   #63
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In your picture with the coil pack, there's this number that looks like a date, do you know if that's the manufacturing date of the coil pack? It says 09-12-17, which I think is Dec. 17th 2009.
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      12-01-2012, 11:27 PM   #64
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Quote:
Originally Posted by timo1980 View Post
In your picture with the coil pack, there's this number that looks like a date, do you know if that's the manufacturing date of the coil pack? It says 09-12-17, which I think is Dec. 17th 2009.
I don't know for sure. The way Germans write the date(s) usually is: dd/mm/yy

But my 135i was built that week in Leipzig, so it makes sense.
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      12-01-2012, 11:32 PM   #65
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Quote:
Originally Posted by romak47 View Post
haha, makes me wanna take a commercially available plug from out of my car and cut it open and compare to the ones i took out recently.
had misfire on 2 and 4 cylinder recently but never came back. Was maybe a hundred or so miles after i changed the plugs.. Curious.... hmmmm....
It sucks if i have to drive all the way to my dealers to get thesee. haha. like 1.5 hrs away. sheesh and gas aint cheap right now. :P
gotta make some calls.

How would one cut a spark plug in half?


In regards to the difference between OE and OEM plugs. There have been a few posts saying how the ceramic insulator is different(the inner guts). All I can say is I have read it here a few times. I also have seen three different threads on the e90 forum about misfires with OEM plugs, as soon as they installed OE bmw bought plugs, the misfire went away. Plus there is a 1Addict here on page two of this thread that had issues.

For me its a no brainer to pay a little bit more for bmw OE plugs over an OEM plug.


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      12-02-2012, 06:04 AM   #66
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Quote:
Originally Posted by cedavis34
Thanks for the excellent write-up, I have 4 of 6 done, and I have a question for those of you that have done this. What did you guys do with the little bit of metal flakes/dirt thats down in the channel after you remove the old plug but before you put in the new one?

It would be very difficult to photograph so that's why I'm not posting a picture, but I worry that it might affect the seal of the spark plug washer to the head? My vacuum isn't narrow enough to get down there, but I could rig something up. Did you guys worry about it? I haven't done anything about it, but I'm starting to question if I should have.

I also found that a mouse had been chewing on one of my coil wires, which is ridiculous because this car is a daily driver.

Thanks for your help!
Use a vacuum cleaner, if you notice any sand falling inside
, you can start the engine without any spark plugs. The engine will blow it out .
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