Okay to just swap 1 coil?

Simple5 · 03-23-2012, 05:06 AM

So was having a bad misfire. Read the JB4 code and came up with Misfire on Cylinder 3. Changed all the sparks and the code came back. Swapped coil packs with cylinder 2 and the code followed over to cylinder 2. Bad coil.

So as the subject states. Is it okay to swap out 1 bad coil or do I need/should to do them all.

Thanks guys!

GeorgiaTech335coupe · 03-23-2012, 05:15 AM

Changing out one is fine. From my experience, the others followed down the road though. But for now, there won't be any problems with one new one.

enrita · 03-23-2012, 05:40 AM

Well its up to decide , I would change all 6 straight away.

E90SoFlo · 03-23-2012, 09:14 AM

I change 1 at a time.

Slidewayz · 03-23-2012, 10:37 AM

I changed just one and my car hasn't blown up yet.

marv85 · 03-23-2012, 10:52 AM

nothing wrong with just changing one coil. I would change all of them though and be over with it...

Slidewayz · 03-23-2012, 11:02 AM

...bloody expensive swapping them all out, though.

03-23-2012, 05:06 AM	#1
Simple5 Major 348 Rep 1,407 Posts Drives: F90 M5 and E84 X1 Xdrive35i Join Date: Jul 2011 Location: USA iTrader: (8)	Okay to just swap 1 coil? So was having a bad misfire. Read the JB4 code and came up with Misfire on Cylinder 3. Changed all the sparks and the code came back. Swapped coil packs with cylinder 2 and the code followed over to cylinder 2. Bad coil. So as the subject states. Is it okay to swap out 1 bad coil or do I need/should to do them all. Thanks guys!
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03-23-2012, 05:15 AM	#2
GeorgiaTech335coupe Lieutenant Colonel 76 Rep 1,883 Posts Drives: Black BMW 335i coupe Join Date: Mar 2007 Location: USA iTrader: (0)	Changing out one is fine. From my experience, the others followed down the road though. But for now, there won't be any problems with one new one. __________________ Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(e90post.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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03-23-2012, 05:40 AM	#3
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	Well its up to decide , I would change all 6 straight away. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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03-23-2012, 09:14 AM	#4
E90SoFlo Banned 196 Rep 2,669 Posts Drives: E90 335i Join Date: Jun 2011 Location: Naples, FL iTrader: (9)	I change 1 at a time.
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03-23-2012, 10:37 AM	#5
Slidewayz Major 33 Rep 1,177 Posts Drives: 2007 335i Join Date: Jan 2009 Location: Oakland, CA iTrader: (5)	I changed just one and my car hasn't blown up yet.
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03-23-2012, 10:52 AM	#6
marv85 Colonel 70 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	nothing wrong with just changing one coil. I would change all of them though and be over with it... __________________ '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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03-23-2012, 11:02 AM	#7
Slidewayz Major 33 Rep 1,177 Posts Drives: 2007 335i Join Date: Jan 2009 Location: Oakland, CA iTrader: (5)	...bloody expensive swapping them all out, though.
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