Modified 335i anyone changed spark plugs?

Noize · 11-01-2007, 01:21 PM

Has anyone with high rpm misfires changed or re-gapped plugs on an N54 yet? I partially pulled the plastic cover, but it was really busy under there so I decided to post first.

Is there a how to or a FAQ on this that I missed in my search?

Is a special tool required?

What plugs are you using?

1clean335i · 11-01-2007, 02:00 PM

i highly doubt anyone has touch the spark plugs on these cars yet.. the fuel line/injector has to come off to gget to the plug. and yes theres a special tool for the spark plug.

EDIT- n/m, i was thinking the v/c gasket..

M3KILL3R · 11-01-2007, 02:03 PM

i actually just bought new oem spark plugs, since my warranty is voided, my car has been giving me some wierd as problems, as me and Charlie have tried to fix it, he suggested i change the spark plugs,

Ima try to change them today, hopefully car runs better.

Noize · 11-01-2007, 02:03 PM

Quote:

Originally Posted by 1clean335i

ithe fuel line/injector has to come off to gget to the plug.

Well that blows azz if true.

HyperM3 · 11-01-2007, 02:04 PM

Dont know what plugs are still oem(used to be the 3/4 prong bosch) but if its a single prong, try sidegapping it.

M3KILL3R · 11-01-2007, 02:06 PM

Spark Plugs x 6; 12120034087 thats the part number to them,
there the BOSCH ZGR6STE2

sflgator · 11-01-2007, 02:41 PM

One of my spark plugs was causing misfires and was changed out by my dealer.

O-cha · 11-01-2007, 02:45 PM

Quote:

Originally Posted by sflgator

One of my spark plugs was causing misfires and was changed out by my dealer.

Misfires stock? Or did you get them to change them because it was misfiring with the tune, if so how did you swing that.

Noize · 11-01-2007, 02:46 PM

Quote:

Originally Posted by O-cha

Misfires stock? Or did you get them to change them because it was misfiring with the tune, if so how did you swing that.

Yeah, I'd like more info on this, please. Which one was it? Did they say it was gapped incorrectly?

M3KILL3R · 11-01-2007, 02:47 PM

Quote:

Originally Posted by sflgator

One of my spark plugs was causing misfires and was changed out by my dealer.

yea i can't do that, cuz i have no warranty...
rocked

M3KILL3R · 11-01-2007, 02:49 PM

well my Cylinder 1 and 3 keep misfiring, and my car is fully stock right now, i had PROcede on it, took it fully off wid Charlie, and its still giving me the same problems as before, the Cylinders keep misfiring...Hopefully changing these Spark Plugs are the issue, if not its my coils then...iif not that...then im screwed lol

O-cha · 11-01-2007, 02:57 PM

Quote:

Originally Posted by M3KILL3R

yea i can't do that, cuz i have no warranty...
rocked

How did you lose it?

M3KILL3R · 11-01-2007, 03:01 PM

Quote:

Originally Posted by O-cha

How did you lose it?

i finally get to use this... LOLL

sambonator · 11-01-2007, 03:09 PM

Quote:

Originally Posted by O-cha

How did you lose it?

http://www.e90post.com/forums/showthread.php?t=86013

I wonder if your engine may actually have some damage from Procede? Is that possible? Did you check all your plug wires and ECU connections?

O-cha · 11-01-2007, 03:12 PM

Quote:

Originally Posted by sambonator

http://www.e90post.com/forums/showthread.php?t=86013

Wow, that's dumb that's no proof and even if it was would be no reason.

sflgator · 11-01-2007, 03:14 PM

Quote:

Originally Posted by O-cha

Misfires stock? Or did you get them to change them because it was misfiring with the tune, if so how did you swing that.

turbotko · 11-01-2007, 03:16 PM

The injectors don't have to come out to do plugs but......there is a special tool with the right clearance to get the plugs out. What makes you think the plugs are causing the misfires? Normally, unless the car was pinging bad enough to damage an electrode the spark plugs are fine.

I highly doubt your misfires are caused by the spark plugs. I have seen a very very few bosch coils with the boots cracked causing misfires on these cars. I've also seen a couple of faulty injectors causing misfires. The injectors are something that will HAVE to be replaced at a dealer as the calibration number of the new injector has to be input to the DME with our diagnostic software. That and the slew of special tools required to replace the injectors and install the teflon seals that must be replaced anytime a injector is removed will prevent you from doing it yourself.

sflgator · 11-01-2007, 03:18 PM

Quote:

Originally Posted by turbotko

The injectors don't have to come out to do plugs but......there is a special tool with the right clearance to get the plugs out. What makes you think the plugs are causing the misfires? Normally, unless the car was pinging bad enough to damage an electrode the spark plugs are fine.

I highly doubt your misfires are caused by the spark plugs. I have seen a very very few bosch coils with the boots cracked causing misfires on these cars. I've also seen a couple of faulty injectors causing misfires. The injectors are something that will HAVE to be replaced at a dealer as the calibration number of the new injector has to be input to the DME with our diagnostic software. That and the slew of special tools required to replace the injectors and install the teflon seals that must be replaced anytime a injector is removed will prevent you from doing it yourself.

How about a failed HPFP??? Could that cause the misfires to the spark plugs?

BMWdmk · 11-01-2007, 03:20 PM

Quote:

Originally Posted by sflgator

One of my spark plugs was causing misfires and was changed out by my dealer.

do u remeber which cylinders wer misfiring
cuz mine has been misfiring for the longest time on cylindar 5 & 6

and if its just a plug
ill change em out and post the DIY for it

sflgator · 11-01-2007, 03:22 PM

Quote:

Originally Posted by dmkaldas

do u remeber which cylinders wer misfiring
cuz mine has been misfiring for the longest time on cylindar 5 & 6

and if its just a plug
ill change em out and post the DIY for it

Cyl. 4, but the Tech determined it was a bad spark plug and replaced it.

Noize · 11-01-2007, 03:29 PM

Quote:

Originally Posted by turbotko

I highly doubt your misfires are caused by the spark plugs. I have seen a very very few bosch coils with the boots cracked causing misfires on these cars. I've also seen a couple of faulty injectors causing misfires. The injectors are something that will HAVE to be replaced at a dealer as the calibration number of the new injector has to be input to the DME with our diagnostic software. That and the slew of special tools required to replace the injectors and install the teflon seals that must be replaced anytime a injector is removed will prevent you from doing it yourself.

I don't. Its only on one cylinder, the same cylinder, and it only happens at high RPM and at appreciably higher than stock boost levels.

I haven't read AFRs on cylinders individually (of course), but the gas analyzer/WBO2 on the dyno has me safely rich throughout the rev range. I just have to reduce my boost a bit more than I'd like to up high, and I believe its due to ignition. If there was a fueling problem, there would be other signs and probably detonation. I'm getting no detonation at all, just a high RPM misfire on #1 when the wick is turned up. Everywhere else its smooth as butter.

I think that if I close the gap a bit on that plug, the problem will go away completely, but I need to find a way to remove the plug to check it out.

BMW_TT · 11-01-2007, 11:31 PM

damn a special tool to get the plugs out? any pics of this tool?

11-01-2007, 01:21 PM	#1
Noize Under the radar 42 Rep 840 Posts Drives: FWD in reverse Join Date: Jan 2007 Location: In traffic at idle iTrader: (1)	Modified 335i anyone changed spark plugs? Has anyone with high rpm misfires changed or re-gapped plugs on an N54 yet? I partially pulled the plastic cover, but it was really busy under there so I decided to post first. Is there a how to or a FAQ on this that I missed in my search? Is a special tool required? What plugs are you using?
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11-01-2007, 02:00 PM	#2
1clean335i Perf BMW mag issue 147, 159 432 Rep 6,799 Posts Drives: Project Estoril Join Date: Feb 2007 Location: Miami, FL iTrader: (31) Garage List 2013 335i M-sport [0.00] 2011 X5 xdrive35i M ... [0.00] 2009 335i M-sport [0.00] 07' 335i Sedan [0.00]	i highly doubt anyone has touch the spark plugs on these cars yet.. the fuel line/injector has to come off to gget to the plug. and yes theres a special tool for the spark plug. EDIT- n/m, i was thinking the v/c gasket.. __________________ '13 Estoril Blue 335i M-sport *Don't PM me!* Message me here- http://www.facebook.com/ProjectEstoril Last edited by 1clean335i; 11-01-2007 at 09:36 PM..
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11-01-2007, 02:03 PM	#3
M3KILL3R Banned 45 Rep 454 Posts Drives: 335i Join Date: Oct 2006 Location: Burbank iTrader: (2)	i actually just bought new oem spark plugs, since my warranty is voided, my car has been giving me some wierd as problems, as me and Charlie have tried to fix it, he suggested i change the spark plugs, Ima try to change them today, hopefully car runs better.
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11-01-2007, 02:04 PM	#5
HyperM3 Too many Alex's, from now on, call me Beaufort 355 Rep 6,188 Posts Drives: See Sig Join Date: Feb 2007 Location: Lawrenceville, NJ iTrader: (8)	Dont know what plugs are still oem(used to be the 3/4 prong bosch) but if its a single prong, try sidegapping it. __________________ 13 HD FatBob 17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip 16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone) 07 335i(gone)
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11-01-2007, 02:06 PM	#6
M3KILL3R Banned 45 Rep 454 Posts Drives: 335i Join Date: Oct 2006 Location: Burbank iTrader: (2)	Spark Plugs x 6; 12120034087 thats the part number to them, there the BOSCH ZGR6STE2
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11-01-2007, 02:41 PM	#7
sflgator Major General 166 Rep 5,389 Posts Drives: '09 MB C63 AMG & '08 MB GL450 Join Date: Oct 2006 Location: U.S. iTrader: (1)	One of my spark plugs was causing misfires and was changed out by my dealer. __________________ \|2009 RENNtech MB C63 AMG \| Black/Black Leather/Black Maple \| Premium II \| MultiMedia \| iPod \| \| TeleAid \| Charcoal Filter Delete \| BMC High-Flow Air Filters \| High-Flow Secondary Cats \| Clear Side Markers \|
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11-01-2007, 02:49 PM	#11
M3KILL3R Banned 45 Rep 454 Posts Drives: 335i Join Date: Oct 2006 Location: Burbank iTrader: (2)	well my Cylinder 1 and 3 keep misfiring, and my car is fully stock right now, i had PROcede on it, took it fully off wid Charlie, and its still giving me the same problems as before, the Cylinders keep misfiring...Hopefully changing these Spark Plugs are the issue, if not its my coils then...iif not that...then im screwed lol
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11-01-2007, 03:16 PM	#17
turbotko Lieutenant 67 Rep 527 Posts Drives: 09 E90 M3 Join Date: May 2007 Location: georgia iTrader: (3)	The injectors don't have to come out to do plugs but......there is a special tool with the right clearance to get the plugs out. What makes you think the plugs are causing the misfires? Normally, unless the car was pinging bad enough to damage an electrode the spark plugs are fine. I highly doubt your misfires are caused by the spark plugs. I have seen a very very few bosch coils with the boots cracked causing misfires on these cars. I've also seen a couple of faulty injectors causing misfires. The injectors are something that will HAVE to be replaced at a dealer as the calibration number of the new injector has to be input to the DME with our diagnostic software. That and the slew of special tools required to replace the injectors and install the teflon seals that must be replaced anytime a injector is removed will prevent you from doing it yourself. __________________ 10 AW on fox E90 M3 with 2 pedals, gentleman’s ride 08 AW on fox E92 M3 also 2 pedals, a bit more rowdy
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11-01-2007, 11:31 PM	#22
BMW_TT Colonel 240 Rep 2,547 Posts Drives: E92 335i Join Date: Aug 2007 Location: Dallas, TX iTrader: (4)	damn a special tool to get the plugs out? any pics of this tool?
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