BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      03-15-2023, 04:36 PM   #1
Converted1
Wolfsburg to Munich
Converted1's Avatar
63
Rep
283
Posts

Drives: 2009 135i Convertible M-Sport
Join Date: Aug 2012
Location: Westchester Co. NY

iTrader: (1)

Any alternative to $3K worth of injectors?

My 09 135i Cabrio with 55K is exhibiting signs of a bad injector. (a couple of rough cold starts, some mild smoke, fuel exhaust smell) While there are no CELs and it drives perfect, I donít want to risk killing the cats or engine. I took a look and see I have series 7 injectors. I checked and it doesnít look like my production date is covered by the SIB.

Is the best accepted way to fix this to by buy new series 12 injectors at about 3K, the installation and coding tools? Usually accept the BMW tax but having a hard time on this one. Doesnít help the parts over doubled in price in the last 3 years.

Any guidance is appreciated.
Appreciate 0
      03-15-2023, 06:04 PM   #2
bnace10
Private First Class
United_States
93
Rep
188
Posts

Drives: 2011 E82 135i DCT Lemans Blue
Join Date: Jul 2020
Location: South Central PA

iTrader: (0)

I'd look for a set of index 12 on Facebook groups that target N54, E90, E82 groups. Generally see used sets for closer to $1200-$1500.

Right here for $1200: https://www.1addicts.com/forums/show....php?t=1975920
Appreciate 2
1and11758.00
      03-17-2023, 06:12 PM   #3
Converted1
Wolfsburg to Munich
Converted1's Avatar
63
Rep
283
Posts

Drives: 2009 135i Convertible M-Sport
Join Date: Aug 2012
Location: Westchester Co. NY

iTrader: (1)

Thank you for the suggestion. Do the index 12 injectors commonly fail? Also concerned about properly replacing the ring and getting them to shrink and fit well.

Quote:
Originally Posted by bnace10 View Post
I'd look for a set of index 12 on Facebook groups that target N54, E90, E82 groups. Generally see used sets for closer to $1200-$1500.

Right here for $1200: https://www.1addicts.com/forums/show....php?t=1975920
Appreciate 0
      03-21-2023, 08:11 AM   #4
bbnks2
Lieutenant Colonel
1144
Rep
1,970
Posts

Drives: 135i N55
Join Date: Jan 2017
Location: NY

iTrader: (0)

Quote:
Originally Posted by Converted1 View Post
My 09 135i Cabrio with 55K is exhibiting signs of a bad injector. (a couple of rough cold starts, some mild smoke, fuel exhaust smell) While there are no CELs and it drives perfect, I donít want to risk killing the cats or engine. I took a look and see I have series 7 injectors. I checked and it doesnít look like my production date is covered by the SIB.

Is the best accepted way to fix this to by buy new series 12 injectors at about 3K, the installation and coding tools? Usually accept the BMW tax but having a hard time on this one. Doesnít help the parts over doubled in price in the last 3 years.

Any guidance is appreciated.
Just buy used injectors for $50 and code them as you need them? No need to just jump to 3k index 12's. They've gotten so expensive because everyone is "upgrading" to index 12 as a preventative "mod" rather than replacing injectors because they've failed. Demand is high.

Replacing a single injector is not hard at all and protool can code it in about 30 seconds super simple. You just need the tool to compress the Teflon seal. I've never had an issue with removing old injectors by hand and reinstalling them by hand but they do sometimes seize up into the head... having the right tool doesn't help either in those cases...

You can mix up index's 1-10 no problem. Index 11/12 shouldn't be mixed with index 1-10 but some people do it and claim no issues... BMW says not to though and it's probably for good reason. Just always replace the Teflon seal and the compression ring.
Appreciate 1
      03-21-2023, 10:10 AM   #5
AshwinLB
Private
Canada
20
Rep
62
Posts

Drives: 2008 BMW 135i 6MT
Join Date: Jan 2018
Location: Toronto

iTrader: (0)

Another option is to just replace with index 12's in that bank, meaning 3 injectors. You can mix index 11/12 with index 1-10 as long as they are both not in the same bank.

Bank 1 - Cylinder 1, 2, 3
Bank 2 - Cylinder 4, 5, 6

For example you can run: 12, 12, 12, 7, 7, 7
But you cannot run: 7, 12, 7, 7, 7, 7
Appreciate 2
      03-22-2023, 04:05 PM   #6
Converted1
Wolfsburg to Munich
Converted1's Avatar
63
Rep
283
Posts

Drives: 2009 135i Convertible M-Sport
Join Date: Aug 2012
Location: Westchester Co. NY

iTrader: (1)

I appreciate the feedback from you both. I know I can find used injectors or upgrade one bank but was hesitant to use sub index 12 as I would expect all of the index 7 to eventually fail over time.

My other concern is diagnosis. I only have occasional light black smoke and hesitation on cold start after sitting for a week. I would say one out of every 10 or 15 cold starts after a long sit. Also, I changed my plugs less thank 5K ago while doing my valve cover and didn’t see any evidence. All of the plugs looked normal. I only have one code, 2B2C
Ox2B2C high pressure fuel, plausibility, cold start. That doesn’t necessarily point to a specific injector issue.

I guess I have to pull all of the injectors, pressurize the system and see which ones leak?

Any other ideas on this are appreciated.
Appreciate 0
      03-23-2023, 06:48 PM   #7
AshwinLB
Private
Canada
20
Rep
62
Posts

Drives: 2008 BMW 135i 6MT
Join Date: Jan 2018
Location: Toronto

iTrader: (0)

Howís your high pressure fuel pump? There were a few revisions for it as well. Since youíre not getting a specific injector code, that would be my first thought. They are pricey though so not something I would just throw at it and hope it sticks. (even though thatís exactly what I did with my car lol but luckily it fixed limp mode issue)

I believe Rein also makes a replacement now thatís cheaper so weíre not stuck with just Genuine anymore, but not sure about Reinís reliability.
Appreciate 0
      03-24-2023, 08:54 PM   #8
Petro135
Captain
United_States
435
Rep
606
Posts

Drives: 2008 135i E88
Join Date: Aug 2019
Location: South jersey

iTrader: (0)

Garage List
2008 BMW 135i  [0.00]
Quote:
Originally Posted by Converted1 View Post
I appreciate the feedback from you both. I know I can find used injectors or upgrade one bank but was hesitant to use sub index 12 as I would expect all of the index 7 to eventually fail over time.

My other concern is diagnosis. I only have occasional light black smoke and hesitation on cold start after sitting for a week. I would say one out of every 10 or 15 cold starts after a long sit. Also, I changed my plugs less thank 5K ago while doing my valve cover and didn’t see any evidence. All of the plugs looked normal. I only have one code, 2B2C
Ox2B2C high pressure fuel, plausibility, cold start. That doesn’t necessarily point to a specific injector issue.

I guess I have to pull all of the injectors, pressurize the system and see which ones leak?

Any other ideas on this are appreciated.
Pull the injectors connect them back to the fuel lines and over cardboard. Cycle your fuel pump and see which ones drip. If you get occasional black.smoke it could just be one starting to leak and is a light drip, And Ive ran all combos together and if coded it doesn't matter if you mix 12's with anything else. I've run a 1,6 and 12 together and a 12, 10, 7 in the other bank all at the same time. I know a few people who have also with no issues. Plus many other combos. And index 12's are not miracle injectors. I've had a few leak on me. Luckily it was before fcp's change of policy.
$3k is ridiculous for new injectors.
Appreciate 0
      04-05-2023, 04:03 PM   #9
Converted1
Wolfsburg to Munich
Converted1's Avatar
63
Rep
283
Posts

Drives: 2009 135i Convertible M-Sport
Join Date: Aug 2012
Location: Westchester Co. NY

iTrader: (1)

I pulled the plugs which are only like 2K old. Cyls 456 were pretty black, 4&6 were wet with fuel. I’m changing them all out to index 12. Bought them from a forumite who discounts brand new sets(found here on on the classifieds).

Just my luck, I recently threw away the only windows laptop(inpa) I had and I don’t own any android devices to code them(protool). What a pain in the ass. Really surprised Clarly and Bimmercode don’t offer injector coding.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:40 PM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST