this used to be so easy, Injector replacement questions.

MilMoWk · 07-01-2015, 11:10 AM

I searched a bit, but couldn’t come up with an answer…

So yesterday the car started running rough, ‘service engine soon’ light came on etc. checked the codes and came up with 29cf, misfire cylinder #3. I plan on swapping coils and checking plugs tonight, but if I decide it is the injector, I will replace it. The car has a late ’06 build date and the current injectors are Pn: 1353753317-08. As far as I know, these are the original injectors.

My questions are:

• If I go with the newest pn, 13538616079, can I replace just the injectors in the bank, 1-3, or do I need to replace all 6 of them?

• Also, I have found new 13537585261-(10 or below) on ebay, if I get one of these can I just replace the bad one?

• My final option would be the generic, Standard Motor Products FJ1050's, anybody have any luck with these?

And yes I know whatever i do the calibration # will need to be coded when done.

Thanks in advance. If this is in the wrong spot, let me know... im new here.

335NJ · 07-01-2015, 11:37 AM

Put new plugs in, don't overthink it. Go from there.

924er · 07-01-2015, 03:19 PM

Get them from rock auto they are original BMW but say generic. Plenty people use them. Only $110.

I think the latest ones are ending with -12 but I could be wrong

dbworld4k · 07-01-2015, 03:41 PM

Quote:

Originally Posted by 924er

Get them from rock auto they are original BMW but say generic. Plenty people use them. Only $110.

I think the latest ones are ending with -12 but I could be wrong

This is correct. The RockAuto ones even have a BMW stamp on them.

Devl · 07-01-2015, 06:00 PM

• If I go with the newest pn, 13538616079, can I replace just the injectors in the bank, 1-3, or do I need to replace all 6 of them?

You can do it in bank as I have done it

• Also, I have found new 13537585261-(10 or below) on ebay, if I get one of these can I just replace the bad one?

Yes. You can mix match any injectors with index 10 or below, higher index injectors need to replace in banks or all 6

j1gilles · 07-01-2015, 06:33 PM

Quote:

Originally Posted by Devl

• If I go with the newest pn, 13538616079, can I replace just the injectors in the bank, 1-3, or do I need to replace all 6 of them?

You can do it in bank as I have done it

• Also, I have found new 13537585261-(10 or below) on ebay, if I get one of these can I just replace the bad one?

Yes. You can mix match any injectors with index 10 or below, higher index injectors need to replace in banks or all 6

I disagree... I've replaced only 1 injector on numerous cars in the last few months mix and matching index 12 with index 11 and not one of the cars has experienced an issue (including my own)...

Devl · 07-01-2015, 06:55 PM

Quote:

Originally Posted by j1gilles

I disagree... I've replaced only 1 injector on numerous cars in the last few months mix and matching index 12 with index 11 and not one of the cars has experienced an issue (including my own)...

Mixing injectors with index 11 and 12 is OK. You can't mix injectors with index 11 or higher with index 10 or below in the same bank.

MilMoWk · 07-01-2015, 08:08 PM

Quote:

Originally Posted by 335NJ

Put new plugs in, don't overthink it. Go from there.

oh so close.

I was so focused on the injector last night that i missed the cracked valve cover and puddled oil. in my defense i was also in a dark driveway using a cell phone flashlight to read the part#, and i knew the cover was weeping so i wasn't shocked that it wasn't totally dry in there. Any way, five of six plug wells were full of oil. cleaned everything up and put #3 coil in the #1 spot (the only dry one) and the car seems to run fine. idles smooth and rev'd to 5k without CE light . i'll take it for a drive tomorrow, wife has me parked in right now.

still stuck with a $400 dollar and multi hour repair, hey that's better than $700.

MilMoWk · 07-02-2015, 01:33 PM

Ah shit, with the #3 coil and plug moved i just got the CEL and another 29CF code for #3 misfire. looks like new injectors.

can anyone answer my the question, do i need to replace all six or can i just do the 1-3 bank?

msjt · 07-02-2015, 01:37 PM

Quote:

Originally Posted by MilMoWk

Ah shit, with the #3 coil and plug moved i just got the CEL and another 29CF code for #3 misfire. looks like new injectors.

can anyone answer my the question, do i need to replace all six or can i just do the 1-3 bank?

You can do one bank at a time. Make sure you get new decouplers too.

MilMoWk · 07-02-2015, 02:47 PM

thanks, and what are those exactly (i know what they are, but what do they do)? they look almost like a crush washer with little retention tabs.

Mike@N54Tuning.com · 07-02-2015, 02:57 PM

Quote:

Originally Posted by Devl

Mixing injectors with index 11 and 12 is OK. You can't mix injectors with index 11 or higher with index 10 or below in the same bank.

+1

Mike

07-01-2015, 11:10 AM	#1
MilMoWk New Member 0 Rep 5 Posts Drives: 07 335i coupe Join Date: Mar 2015 Location: Milwaukee, WI iTrader: (0)	this used to be so easy, Injector replacement questions. I searched a bit, but couldn’t come up with an answer… So yesterday the car started running rough, ‘service engine soon’ light came on etc. checked the codes and came up with 29cf, misfire cylinder #3. I plan on swapping coils and checking plugs tonight, but if I decide it is the injector, I will replace it. The car has a late ’06 build date and the current injectors are Pn: 1353753317-08. As far as I know, these are the original injectors. My questions are: • If I go with the newest pn, 13538616079, can I replace just the injectors in the bank, 1-3, or do I need to replace all 6 of them? • Also, I have found new 13537585261-(10 or below) on ebay, if I get one of these can I just replace the bad one? • My final option would be the generic, Standard Motor Products FJ1050's, anybody have any luck with these? And yes I know whatever i do the calibration # will need to be coded when done. Thanks in advance. If this is in the wrong spot, let me know... im new here.
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07-01-2015, 11:37 AM	#2
335NJ Colonel 535 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	Put new plugs in, don't overthink it. Go from there.
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07-01-2015, 03:19 PM	#3
924er Colonel 351 Rep 2,049 Posts Drives: e92 335i '10 Join Date: Feb 2014 Location: Socal iTrader: (0)	Get them from rock auto they are original BMW but say generic. Plenty people use them. Only $110. I think the latest ones are ending with -12 but I could be wrong __________________ '10 e92 N54 DCI intakes, ER chargepipe, TIAL BOV, VRSF 5in FMIC, BMS Downpipes COBB e30
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07-01-2015, 06:00 PM	#5
Devl Enlisted Member 0 Rep 42 Posts Drives: 2009 335xi Join Date: May 2012 Location: PA iTrader: (2)	• If I go with the newest pn, 13538616079, can I replace just the injectors in the bank, 1-3, or do I need to replace all 6 of them? You can do it in bank as I have done it • Also, I have found new 13537585261-(10 or below) on ebay, if I get one of these can I just replace the bad one? Yes. You can mix match any injectors with index 10 or below, higher index injectors need to replace in banks or all 6
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07-02-2015, 01:33 PM	#9
MilMoWk New Member 0 Rep 5 Posts Drives: 07 335i coupe Join Date: Mar 2015 Location: Milwaukee, WI iTrader: (0)	Ah shit, with the #3 coil and plug moved i just got the CEL and another 29CF code for #3 misfire. looks like new injectors. can anyone answer my the question, do i need to replace all six or can i just do the 1-3 bank?
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07-02-2015, 02:47 PM	#11
MilMoWk New Member 0 Rep 5 Posts Drives: 07 335i coupe Join Date: Mar 2015 Location: Milwaukee, WI iTrader: (0)	thanks, and what are those exactly (i know what they are, but what do they do)? they look almost like a crush washer with little retention tabs.
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