P0172 code, sputter at idle, cold start related

E92_PINO · 01-13-2015, 08:14 PM

I keep throwing a p0172 code (bank 1 running rich) I can clear code but once I start the car after it has sat in the cold all day at work at first car runs fine but after about 30 seconds I start to feel a sputter at idle and I throw the same exact code over.. I've tried searching but can find a stright answer only mod I have are the oiled air filters, any idea as to what this can be? I was thinking maybe MAF need to be cleaned due to the oil from the filters... Help please car runs fine once I start driving I just want to fix the problem without replacing a bunch of parts

E92_PINO · 01-14-2015, 04:35 AM

Anyone?

E92_PINO · 01-14-2015, 02:44 PM

Bump

335byi · 01-14-2015, 06:53 PM

Leaking injector ? Does it happen during hot/ warm starts ?

E92_PINO · 01-14-2015, 06:58 PM

No only on cold start ups, which leads me to believe it's not a leaky injector

j1gilles · 01-14-2015, 08:36 PM

Quote:

Originally Posted by E90CTboy1289

No only on cold start ups, which leads me to believe it's not a leaky injector

It's a leaking injector... Pull the plugs after your car sits for a while and you'll find at least one of them fuel fowled.

E92_PINO · 01-14-2015, 08:47 PM

Quote:

Originally Posted by j1gilles

It's a leaking injector... Pull the plugs after your car sits for a while and you'll find at least one of them fuel fowled.

So the one that is fuel fouled is the injector I should replace?

E92_PINO · 01-14-2015, 09:05 PM

Also I did do the sea foam treatment just to see if it cleared things up a bit, and when i did a cold start a few hours later things seemed to have cleared up, but I will only know for sure tomorrow mornkng once I get a true cold start.

j1gilles · 01-15-2015, 06:01 PM

Quote:

Originally Posted by E90CTboy1289

Quote:

Originally Posted by j1gilles

It's a leaking injector... Pull the plugs after your car sits for a while and you'll find at least one of them fuel fowled.

So the one that is fuel fouled is the injector I should replace?

Yes. I doubt seafoam fixed you car but it can't hurt.

E92_PINO · 01-17-2015, 05:07 AM

Quote:

Originally Posted by j1gilles

Yes. I doubt seafoam fixed you car but it can't hurt.

Def cleaned some out, but didn't smoke as bad as I thought it would. But still didn't help, ses light is back on and I'm still pulling my hair, I will be checking g the Injectors next, anyone know how these can be tested without pulling the spark plugs?

j1gilles · 01-17-2015, 07:33 PM

The easiest way to test for a leaking injector is to pull the plugs... Takes like 30 minutes

bavaddict · 07-07-2015, 05:54 PM

OP, wondering what was the outcome of your diagnosis or what was the solution that you came up with?

Thanks.

Wolf 335 · 04-15-2016, 08:53 AM

OP any update on this issue?

smokeywokey · 04-15-2016, 09:52 AM

i had the same problem, it only happened on a cold start in the morning from my car sitting over night, injector would leak and have a hard time starting and when it did it ran rough for a little then went away. changed injector and problem solved.. but yes pull the spark plug youll notice it right away

Wolf 335 · 04-15-2016, 10:07 AM

Quote:

Originally Posted by smokeywokey

i had the same problem, it only happened on a cold start in the morning from my car sitting over night, injector would leak and have a hard time starting and when it did it ran rough for a little then went away. changed injector and problem solved.. but yes pull the spark plug youll notice it right away

I am currently having this issue on cold starts. Hopping it's just the ignition coil. Will be relocation coils and checking the plugs this afternoon.

Thanks for the feedback!

01-13-2015, 08:14 PM	#1
E92_PINO Enlisted Member 3 Rep 44 Posts Drives: E92-N54 Join Date: Jul 2012 Location: Ct iTrader: (0)	P0172 code, sputter at idle, cold start related I keep throwing a p0172 code (bank 1 running rich) I can clear code but once I start the car after it has sat in the cold all day at work at first car runs fine but after about 30 seconds I start to feel a sputter at idle and I throw the same exact code over.. I've tried searching but can find a stright answer only mod I have are the oiled air filters, any idea as to what this can be? I was thinking maybe MAF need to be cleaned due to the oil from the filters... Help please car runs fine once I start driving I just want to fix the problem without replacing a bunch of parts
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01-14-2015, 04:35 AM	#2
E92_PINO Enlisted Member 3 Rep 44 Posts Drives: E92-N54 Join Date: Jul 2012 Location: Ct iTrader: (0)	Anyone?
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01-14-2015, 02:44 PM	#3
E92_PINO Enlisted Member 3 Rep 44 Posts Drives: E92-N54 Join Date: Jul 2012 Location: Ct iTrader: (0)	Bump
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01-14-2015, 06:53 PM	#4
335byi New Member 0 Rep 9 Posts Drives: 07 6mt 335i space grey Join Date: Aug 2014 Location: United States iTrader: (0)	Leaking injector ? Does it happen during hot/ warm starts ?
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01-14-2015, 06:58 PM	#5
E92_PINO Enlisted Member 3 Rep 44 Posts Drives: E92-N54 Join Date: Jul 2012 Location: Ct iTrader: (0)	No only on cold start ups, which leads me to believe it's not a leaky injector
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01-14-2015, 09:05 PM	#8
E92_PINO Enlisted Member 3 Rep 44 Posts Drives: E92-N54 Join Date: Jul 2012 Location: Ct iTrader: (0)	Also I did do the sea foam treatment just to see if it cleared things up a bit, and when i did a cold start a few hours later things seemed to have cleared up, but I will only know for sure tomorrow mornkng once I get a true cold start.
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01-17-2015, 07:33 PM	#11
j1gilles Captain 51 Rep 719 Posts Drives: 2009 335xi Join Date: Feb 2013 Location: Chicago iTrader: (0)	The easiest way to test for a leaking injector is to pull the plugs... Takes like 30 minutes __________________ ASE master tech (many moons ago)335xi- JB4 G5 iso/e50 custom flash/Custom meth/Borla mids/Custom x-pipe/DCI/ER charge pipe/Dual Ebay BOV's/Alpina B3 flash/Paddle shifter retro fit
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07-07-2015, 05:54 PM	#12
bavaddict Lieutenant 51 Rep 443 Posts Drives: F32 435i MPerf Edit Join Date: May 2010 Location: East Coast iTrader: (0)	OP, wondering what was the outcome of your diagnosis or what was the solution that you came up with? Thanks.
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04-15-2016, 08:53 AM	#13
Wolf 335 Brigadier General 2372 Rep 3,560 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: Toronto iTrader: (0)	OP any update on this issue?
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04-15-2016, 09:52 AM	#14
smokeywokey Private First Class 11 Rep 178 Posts Drives: 335i Join Date: Nov 2014 Location: las vegas iTrader: (0)	i had the same problem, it only happened on a cold start in the morning from my car sitting over night, injector would leak and have a hard time starting and when it did it ran rough for a little then went away. changed injector and problem solved.. but yes pull the spark plug youll notice it right away
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