Jb4 problem

SGJB135i · 06-19-2013, 11:56 PM

Hey guys, I keep installing my jb4 and a few weeks later I keep getting a check engine light and it's a misfire cylinder. My car has 90k miles right now. I believe my dealer changed my cylinders but I maybe wrong. But is it the jb4 messing up or it's just my jb4? I never had a problem when my car was stock but with the jb4 its giving me a problem. Please someone let me know ASAP, thank you.

TTurbo335 · 06-20-2013, 12:09 AM

http://www.e90post.com/forums/showthread.php?t=631829

When's the last time you changed the spark plugs? Where in Cali are you located?

E90Company · 06-20-2013, 12:26 AM

They changed your cylinders??

If you can read the codes and post them here, we can give you more detailed help.

SGJB135i · 06-20-2013, 01:43 AM

Quote:

Originally Posted by E90Company

They changed your cylinders??

If you can read the codes and post them here, we can give you more detailed help.

P305 cylinder 5!

SGJB135i · 06-20-2013, 01:44 AM

Quote:

Originally Posted by Marz11

http://www.e90post.com/forums/showthread.php?t=631829

When's the last time you changed the spark plugs? Where in Cali are you located?

30k miles. I will change those soon

_ink · 06-20-2013, 08:59 AM

Plugs and/or ignition coil.

M3_Dylan · 06-20-2013, 10:06 AM

Quote:

Originally Posted by _ink

Plugs and/or ignition coil.

+1

Indo Rider · 06-20-2013, 04:25 PM

Quote:

Originally Posted by Jetblack135

30k miles. I will change those soon

So you have 60K miles on the plugs? If that's right you should definitely change those as a first step.

vanondemand · 06-20-2013, 08:43 PM

check your coils!!!! make sure they are not damaged.

SGJB135i · 06-24-2013, 09:40 PM

Sorry guys i forgot the dealer changed my spark plugs 2000 miles ago. This happens to my car often and I take off the jb4 and it is good to go with no problems. Anyone else have expeirnce with this?

litxus · 06-24-2013, 09:44 PM

Try replacing the coil first (cylinder 5) and see if that does the trick. If not it could be injectors starting to go (did you get yours replaced by recall?).

135Pats · 06-24-2013, 09:45 PM

Its a tune induced misfire, likely something with your ignition is not up to snuff. If plugs are that new, replace the coilpack.

SGJB135i · 06-24-2013, 09:47 PM

Quote:

Originally Posted by litxus

Try replacing the coil first (cylinder 5) and see if that does the trick. If not it could be injectors starting to go (did you get yours replaced by recall?).

yes it went through the recall. I doubt it would be the injectors.

SGJB135i · 06-24-2013, 09:47 PM

Quote:

Originally Posted by 135Pats

Its a tune induced misfire, likely something with your ignition is not up to snuff. If plugs are that new, replace the coilpack.

Im just going to try to switch around the coils. It is off my car right now, but i will put it back on soon. Thank you.

06-19-2013, 11:56 PM	#1
SGJB135i Banned 43 Rep 764 Posts Drives: Jet black 135i Join Date: Jul 2012 Location: Cali iTrader: (1)	Jb4 problem Hey guys, I keep installing my jb4 and a few weeks later I keep getting a check engine light and it's a misfire cylinder. My car has 90k miles right now. I believe my dealer changed my cylinders but I maybe wrong. But is it the jb4 messing up or it's just my jb4? I never had a problem when my car was stock but with the jb4 its giving me a problem. Please someone let me know ASAP, thank you.
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06-20-2013, 12:09 AM	#2
TTurbo335 Second Lieutenant 21 Rep 200 Posts Drives: BMW 335i Join Date: Nov 2012 Location: So Cal iTrader: (2)	http://www.e90post.com/forums/showthread.php?t=631829 When's the last time you changed the spark plugs? Where in Cali are you located?
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06-20-2013, 12:26 AM	#3
E90Company Major General 194 Rep 6,136 Posts Drives: Car Join Date: Mar 2012 Location: FL iTrader: (2)	They changed your cylinders?? If you can read the codes and post them here, we can give you more detailed help.
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06-20-2013, 08:59 AM	#6
_ink Jedi samurai ninja turtle 619 Rep 3,021 Posts Drives: X3 M40i 2018 Join Date: May 2012 Location: Sydney, Australia iTrader: (0) Garage List 2018 X3 M40i [0.00]	Plugs and/or ignition coil.
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06-20-2013, 08:43 PM	#9
vanondemand Banned 46 Rep 659 Posts Drives: E92 335i M/T Join Date: Feb 2011 Location: Vancouver iTrader: (1) Garage List 2007 335i [0.00]	check your coils!!!! make sure they are not damaged.
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06-24-2013, 09:40 PM	#10
SGJB135i Banned 43 Rep 764 Posts Drives: Jet black 135i Join Date: Jul 2012 Location: Cali iTrader: (1)	Sorry guys i forgot the dealer changed my spark plugs 2000 miles ago. This happens to my car often and I take off the jb4 and it is good to go with no problems. Anyone else have expeirnce with this?
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06-24-2013, 09:44 PM	#11
litxus Lieutenant 58 Rep 494 Posts Drives: 09 E90 335i sedan Join Date: Jan 2013 Location: Villa Park iTrader: (1)	Try replacing the coil first (cylinder 5) and see if that does the trick. If not it could be injectors starting to go (did you get yours replaced by recall?).
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06-24-2013, 09:45 PM	#12
135Pats Major General 456 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	Its a tune induced misfire, likely something with your ignition is not up to snuff. If plugs are that new, replace the coilpack.
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