Long term reliability of water injection system

Rguy · 07-08-2019, 11:38 AM

Im at 3580 miles and I have a few codes for the water injection system requiring a new valve block which needs to be shipped in from Germany in the next few days. If this was a cheap part to replace, I probably wouldnt care, but its a $3500 part PLUS labor if you had to pay for it on your own dime. If these things fail every few years thats gonna hurt when these warranties die out. The SA did mention to me that this might be a "new updated valve block" or something but he wasnt sure. Anyone had theirs replaced and had it fail again?

Rguy, who is glad he splurged for the Carmax warranty.

Gomeler · 07-08-2019, 11:56 AM

I've read about some filter in the water injection system needing to be serviced, but hadn't heard about the valve block being replaced. I'll have to poke around back there to see what's what.

Rguy · 07-08-2019, 12:01 PM

Notes from my service "Found fault 124015, advised to replace water injection valve block".

Boostin FD · 07-08-2019, 01:35 PM

My Water injection "injector" has been replaced in October of last year with 2800 miles. That's what I got from BMW, when I called to acquire about it, before I purchased. It seems, for the most part, they have one fail early on... and then it's okay... who knows though.

delfunk · 08-02-2019, 03:18 PM

Quote:

Originally Posted by Boostin FD

My Water injection "injector" has been replaced in October of last year with 2800 miles. That's what I got from BMW, when I called to acquire about it, before I purchased. It seems, for the most part, they have one fail early on... and then it's okay... who knows though.

Mine was replaced at 1200 miles and the codes were there and the dealer didn't see them! Same exact scenario happened to another owner.

Rguy · 08-02-2019, 03:23 PM

Part finally arrived today. Have an appointment for thursday for install.

MarksM · 08-03-2019, 11:04 AM

I have had no problems for 26k miles. Make sure that you are using ONLY Distilled water. tap and purified will clog the system

Rguy · 08-03-2019, 11:15 AM

Quote:

Originally Posted by MarksM

I have had no problems for 26k miles. Make sure that you are using ONLY Distilled water. tap and purified will clog the system

How often do you check or replace the stone filter?

MarksM · 08-03-2019, 11:34 AM

Once at 5k, but I carry a spare.

Day Laborer · 08-03-2019, 04:37 PM

Quote:

Originally Posted by Rguy

How often do you check or replace the stone filter?

Under the maintenance warranty, I believe they change it every 2nd oil change- likely as often as the air filter.

Day Laborer · 08-03-2019, 04:38 PM

Quote:

Originally Posted by MarksM

I have had no problems for 26k miles. Make sure that you are using ONLY Distilled water. tap and purified will clog the system

Bravo on the mileage! The GTS is definitely not designed to be a garage queen

em4ef82 · 08-03-2019, 08:10 PM

Quote:

Originally Posted by Rguy

Quote:

Originally Posted by MarksM

I have had no problems for 26k miles. Make sure that you are using ONLY Distilled water. tap and purified will clog the system

How often do you check or replace the stone filter?

Replaced mine as soon as I noticed the water level was not changing and the water was overflowing from the tank. Turned out the old filter had scale buildup and clogged. After installing the new filter and going through 4 tanks of gas (just city driving), the quarter of the water tank is already gone.

If the car was sitting around for long time like mine, I suggest you change the stone filter and don't wait for the next scheduled service.

Rguy · 08-09-2019, 02:30 PM

Picked up the car this morning. Wow, you can 100% tell when the car's running as designed with water injection/full boost. It was fun before but definitely was down 50hp.

Hopefully this fix works for the long term.

FormulaMMM · 08-11-2019, 06:02 AM

Protocol appears to be filter replacement every 2nd oil change. Just had my 2nd oil change at 3,100 miles and the service indication was for filter replacement as well.

$50 part from the dealer, just shy of $100 installed for this little bugger. I asked for the old filter.

Anyone care to explain how it works?? Not like any "filter" I've seen. Closed end, presumably attracts/collects impurities? Old one looks perfect. Golf tee for scale.

It's part 14 here

SunnyD · 08-11-2019, 11:37 AM

Quote:

Originally Posted by FormulaMMM

Protocol appears to be filter replacement every 2nd oil change. Just had my 2nd oil change at 3,100 miles and the service indication was for filter replacement as well.

$50 part from the dealer, just shy of $100 installed for this little bugger. I asked for the old filter.

Anyone care to explain how it works?? Not like any "filter" I've seen. Closed end, presumably attracts/collects impurities? Old one looks perfect. Golf tee for scale.

It's part 14 here

I just got my 2nd oil change too and they noted that the water filter needed replacement, but the part wasn't in stock. They'll notify me once they get it in.

the_scotsman · 08-17-2019, 03:41 PM

How do you check this filter?

16m4gts · 08-21-2019, 07:34 PM

Also having water injection issues within the last few months. Brought it up during latest service and they want to replace the whole system. Said something like $5k for the parts but it's still under warranty. Been waiting for a few weeks for it to ship from Germany - something about customs?

Actually incredibly surprising how different the car feels with reduced power. It's night and day.

the_scotsman · 08-22-2019, 08:41 PM

Quote:

Originally Posted by the_scotsman

How do you check this filter?

My car was at Classic BMW to have the hood aligned. I asked them to check the water injection system as I've not used much water in 2250 miles - no issues found. I need to drive it harder

BMW9 · 08-30-2019, 09:44 AM

My car's power delivery is inconsistent. Sometimes it pulls hard and sometimes I can tell it's down on power. I need to have it checked out but the car is definitely using the water. Also, as the water splashes around in the tank, when I accelerate hard or take a hard turn even at 3/4 full tank of water it notifies me that water is low.

FormulaMMM · 08-30-2019, 11:44 AM

Quote:

Originally Posted by BMW9

My car's power delivery is inconsistent. Sometimes it pulls hard and sometimes I can tell it's down on power. I need to have it checked out but the car is definitely using the water. Also, as the water splashes around in the tank, when I accelerate hard or take a hard turn even at 3/4 full tank of water it notifies me that water is low.

Yes, something wrong. Track with everything from full tank to almost empty, never got a warning due to water moving around.

BMW9 · 08-31-2019, 10:04 AM

Quote:

Originally Posted by FormulaMMM

Quote:

Originally Posted by BMW9

My car's power delivery is inconsistent. Sometimes it pulls hard and sometimes I can tell it's down on power. I need to have it checked out but the car is definitely using the water. Also, as the water splashes around in the tank, when I accelerate hard or take a hard turn even at 3/4 full tank of water it notifies me that water is low.

Yes, something wrong. Track with everything from full tank to almost empty, never got a warning due to water moving around.

Thanks. I'll mention it when I go in for the driveshaft replacement.

07-08-2019, 11:38 AM	#1
Rguy Enlisted Member 41 Rep 40 Posts Drives: Acura NSX, ITR, M4 GTS Join Date: Jun 2019 Location: Little Silver NJ iTrader: (0)	Long term reliability of water injection system Im at 3580 miles and I have a few codes for the water injection system requiring a new valve block which needs to be shipped in from Germany in the next few days. If this was a cheap part to replace, I probably wouldnt care, but its a $3500 part PLUS labor if you had to pay for it on your own dime. If these things fail every few years thats gonna hurt when these warranties die out. The SA did mention to me that this might be a "new updated valve block" or something but he wasnt sure. Anyone had theirs replaced and had it fail again? Rguy, who is glad he splurged for the Carmax warranty.
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07-08-2019, 11:56 AM	#2
Gomeler Lieutenant 500 Rep 411 Posts Drives: '16 M235iR, '16 M4 GTS Join Date: Jun 2019 Location: Boulder, CO iTrader: (0)	I've read about some filter in the water injection system needing to be serviced, but hadn't heard about the valve block being replaced. I'll have to poke around back there to see what's what.
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07-08-2019, 12:01 PM	#3
Rguy Enlisted Member 41 Rep 40 Posts Drives: Acura NSX, ITR, M4 GTS Join Date: Jun 2019 Location: Little Silver NJ iTrader: (0)	Notes from my service "Found fault 124015, advised to replace water injection valve block".
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07-08-2019, 01:35 PM	#4
Boostin FD Bored all the time 382 Rep 2,173 Posts Drives: Batmobile Join Date: Jan 2010 Location: Kirkwood iTrader: (2)	My Water injection "injector" has been replaced in October of last year with 2800 miles. That's what I got from BMW, when I called to acquire about it, before I purchased. It seems, for the most part, they have one fail early on... and then it's okay... who knows though. __________________ Current: 2014 991 Turbo RS Past: 15 GT3, 17 R8 SC, Two 16 M4 GTS’s, Two 18 GT350R's, Two 13 RS5’s, 13 M3, 10 R8, 15 M4, 09 M3, 04 M3, 09 S5, 02 M3... It all started with an RX-7 (FD).
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08-02-2019, 03:23 PM	#6
Rguy Enlisted Member 41 Rep 40 Posts Drives: Acura NSX, ITR, M4 GTS Join Date: Jun 2019 Location: Little Silver NJ iTrader: (0)	Part finally arrived today. Have an appointment for thursday for install.
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08-03-2019, 11:04 AM	#7
MarksM Dishonorable Discharged 100 Rep 181 Posts Drives: M3 2012, M4 GTS Sold Join Date: Jun 2008 Location: SoCal iTrader: (1)	I have had no problems for 26k miles. Make sure that you are using ONLY Distilled water. tap and purified will clog the system
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08-03-2019, 11:34 AM	#9
MarksM Dishonorable Discharged 100 Rep 181 Posts Drives: M3 2012, M4 GTS Sold Join Date: Jun 2008 Location: SoCal iTrader: (1)	Once at 5k, but I carry a spare.
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08-09-2019, 02:30 PM	#13
Rguy Enlisted Member 41 Rep 40 Posts Drives: Acura NSX, ITR, M4 GTS Join Date: Jun 2019 Location: Little Silver NJ iTrader: (0)	Picked up the car this morning. Wow, you can 100% tell when the car's running as designed with water injection/full boost. It was fun before but definitely was down 50hp. Hopefully this fix works for the long term.
	Appreciate 0 Quote

08-11-2019, 06:02 AM	#14
FormulaMMM Brigadier General 3663 Rep 3,422 Posts Drives: E90 M3 Join Date: Oct 2011 Location: Midwest iTrader: (2)	Protocol appears to be filter replacement every 2nd oil change. Just had my 2nd oil change at 3,100 miles and the service indication was for filter replacement as well. $50 part from the dealer, just shy of $100 installed for this little bugger. I asked for the old filter. Anyone care to explain how it works?? Not like any "filter" I've seen. Closed end, presumably attracts/collects impurities? Old one looks perfect. Golf tee for scale. It's part 14 here __________________ M4 GTS, GT3, C63 S \| E90 M3s, E39 M5
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08-17-2019, 03:41 PM	#16
the_scotsman Private First Class 119 Rep 132 Posts Drives: Sport Evo/JP M3/M4 GTS Join Date: Jul 2018 Location: Dallas, TX iTrader: (0)	How do you check this filter? __________________ '16 M4 GTS '90 E30 M3 Sport Evo '89 E30 M3 JP Racer
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08-21-2019, 07:34 PM	#17
16m4gts New Member 2 Rep 5 Posts Drives: M4 GTS Join Date: Aug 2019 Location: NC iTrader: (0)	Also having water injection issues within the last few months. Brought it up during latest service and they want to replace the whole system. Said something like $5k for the parts but it's still under warranty. Been waiting for a few weeks for it to ship from Germany - something about customs? Actually incredibly surprising how different the car feels with reduced power. It's night and day.
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08-30-2019, 09:44 AM	#19
BMW9 Second Lieutenant 53 Rep 234 Posts Drives: BMW M4 / Nissan GTR Join Date: Nov 2010 Location: Los Angeles iTrader: (0)	My car's power delivery is inconsistent. Sometimes it pulls hard and sometimes I can tell it's down on power. I need to have it checked out but the car is definitely using the water. Also, as the water splashes around in the tank, when I accelerate hard or take a hard turn even at 3/4 full tank of water it notifies me that water is low.
	Appreciate 0 Quote

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