Carbon build up water injection

shah269 · 03-11-2013, 03:43 PM

Makes you wonder why somone hasn't thought of a nice way of using your windshied washer system to run a water injection system yet to simply wash away all this silly carbon and reduce engine temperatures?

I mean what, $300 easy for nut blasting your intake Vs. $300 for a decent water injection system?

Kind of makes you wonder?

For those who have used water injection....any carbon build up issues?

Dackelone · 03-11-2013, 04:06 PM

^^because... water does not "compress" like walnut shells when Mr piston meets Mr cyclinderhead.

Seriously... water injection would work. But its very dangerous. I know of quite a few Subbie techs who use a cup of water and a vacuum port to "clean" the carbon by sucking small slurps at a time. But it only takes one GULP before your engine it is mortally wounded.

ErvGotti · 03-11-2013, 04:51 PM

Most people running methanol on here are running a 50/50 meth to water ratio and all it does is slow carbon build up down and not prevent it and methanol is a great cleaner. There's no getting around carbon build up on these engines.

SteveAZ · 03-11-2013, 09:52 PM

To OP...this is done often and fairly common

however, water alone through the intake, I'd be surprised if it had much affect on existing buildup...that stuff is VERY sticky!

As to preventing it? I don't know if you'd be able to completely resolve the issue....but greatly reducing it...certainly.

Having done (in order)...

-FMIC and seeing everything coated in a thin layer of oil...

-Installing an OCC and seeing the amount of oil collected (>table spoon) in a relatively short period of time(1450 miles)...

-Having done a valve cleaning and thus removing the charge pipe and intake to find virtually no film present but dirty valves...(not sure of the timeline on the buildup)

-Having replaced the PCV and finding a lot of oil present...

-Seeing pics of where somebody else had the valve cleaning done a year ago, runs an OCC and recently verified they were still pretty clean...

Leads me to believe that the situation is unavoidable to some extent but can be greatly reduced through preventative measures. Running meth post clean would also likely help, but have no experience to share on that...maybe next year...

shah269 · 03-12-2013, 08:48 AM

Run a bit of windshield washer fluid through the sysem after the car is nice and warm...just a squirt when the car is on the highway....may work a little?

Nothing much just a few CC's here and a few CC's there.....

ErvGotti · 03-12-2013, 10:30 AM

Quote:

Originally Posted by shah269

Run a bit of windshield washer fluid through the sysem after the car is nice and warm...just a squirt when the car is on the highway....may work a little?

Nothing much just a few CC's here and a few CC's there.....

That's not gonna do jack squat trust me it's well documented on E90 post of people running meth which is basically windshield washer fluid and they're spraying way more that a few CC's when they go WOT and it doesn't stop the build up.

shah269 · 03-12-2013, 11:05 AM

no kidding...crud!
then run Techron FI cleaner?
or do what Cadi did...correct the timing overlap issue?

ian.j · 03-12-2013, 01:48 PM

i have seen videos where the valve cleaner is sucked up the vac hose into the intake to clean carbon. not sure if it works as i have never tried it on my car.

ErvGotti · 03-12-2013, 03:24 PM

Quote:

Originally Posted by shah269

no kidding...crud!
then run Techron FI cleaner?
or do what Cadi did...correct the timing overlap issue?

That and probably a combination of things, supposedly a pro Cobb tuner can tune the cam right to help with carbon build up, that in conjunction with the BMS OCC, the RB modded PCV valve, and meth injection might be enough to stop or significantly slow it down.

Do not run Techron Cleaner through a methanol pump, it will jack the pump up.

Quote:

Originally Posted by ian.j

i have seen videos where the valve cleaner is sucked up the vac hose into the intake to clean carbon. not sure if it works as i have never tried it on my car.

Members on E90 post have also done that and it doesn't help.

shah269 · 03-13-2013, 08:40 AM

So to help reduce the issue all we need is to have our timing adjusted?

I still think this is an enviromental issue.

Say you have carbon build up. A chunk of carbon falls off....and lands on the cat and burns a hole through it....who covers that? You and I or BMW?

loesch · 03-13-2013, 07:18 PM

Anyone know if running an E85 mixture makes the situation worse?

03-11-2013, 03:43 PM	#1
shah269 Major 316 Rep 1,035 Posts Drives: 2009 Join Date: Oct 2011 Location: NJ iTrader: (0)	Carbon build up water injection Makes you wonder why somone hasn't thought of a nice way of using your windshied washer system to run a water injection system yet to simply wash away all this silly carbon and reduce engine temperatures? I mean what, $300 easy for nut blasting your intake Vs. $300 for a decent water injection system? Kind of makes you wonder? For those who have used water injection....any carbon build up issues?
	Appreciate 0 Tweet Quote

03-11-2013, 04:06 PM	#2
Dackelone European Editor 10589 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	^^because... water does not "compress" like walnut shells when Mr piston meets Mr cyclinderhead. Seriously... water injection would work. But its very dangerous. I know of quite a few Subbie techs who use a cup of water and a vacuum port to "clean" the carbon by sucking small slurps at a time. But it only takes one GULP before your engine it is mortally wounded. __________________ Dackel's European Delivery Museum Guide
	Appreciate 0 Quote

03-11-2013, 04:51 PM	#3
ErvGotti Major 124 Rep 1,362 Posts Drives: 2008 135i 6MT Join Date: Jul 2010 Location: Aviano iTrader: (5) Garage List 2008 135i [6.00]	Most people running methanol on here are running a 50/50 meth to water ratio and all it does is slow carbon build up down and not prevent it and methanol is a great cleaner. There's no getting around carbon build up on these engines.
	Appreciate 0 Quote

03-11-2013, 09:52 PM	#4
SteveAZ Captain 60 Rep 654 Posts Drives: 135i Cab Join Date: Jul 2012 Location: Phoenix, AZ iTrader: (5)	To OP...this is done often and fairly common however, water alone through the intake, I'd be surprised if it had much affect on existing buildup...that stuff is VERY sticky! As to preventing it? I don't know if you'd be able to completely resolve the issue....but greatly reducing it...certainly. Having done (in order)... -FMIC and seeing everything coated in a thin layer of oil... -Installing an OCC and seeing the amount of oil collected (>table spoon) in a relatively short period of time(1450 miles)... -Having done a valve cleaning and thus removing the charge pipe and intake to find virtually no film present but dirty valves...(not sure of the timeline on the buildup) -Having replaced the PCV and finding a lot of oil present... -Seeing pics of where somebody else had the valve cleaning done a year ago, runs an OCC and recently verified they were still pretty clean... Leads me to believe that the situation is unavoidable to some extent but can be greatly reduced through preventative measures. Running meth post clean would also likely help, but have no experience to share on that...maybe next year... __________________ 2008 E88--Fuel-It! Stage 4 LPFP & PI--PS2 turbos--JB4/MHD--FBO--662whp/604wtq 2011 E90--Fuel-It! S2BL LPFP and PI--PS2 Turbo--JB4/MHD--FBO--546whp/589wtq 2013 Mini JCW--Tune--DP--FMIC--a couple Fuel-It! goodies--265whp/320wtq 2013 F10--JB4/BM3 2015 F82--Fuel-It! Stage 3 LPFP & PI--PS2 Turbos-- JB4/BM3-FBO Last edited by SteveAZ; 03-12-2013 at 02:00 AM..
	Appreciate 0 Quote

03-12-2013, 08:48 AM	#5
shah269 Major 316 Rep 1,035 Posts Drives: 2009 Join Date: Oct 2011 Location: NJ iTrader: (0)	Run a bit of windshield washer fluid through the sysem after the car is nice and warm...just a squirt when the car is on the highway....may work a little? Nothing much just a few CC's here and a few CC's there.....
	Appreciate 0 Quote

03-12-2013, 11:05 AM	#7
shah269 Major 316 Rep 1,035 Posts Drives: 2009 Join Date: Oct 2011 Location: NJ iTrader: (0)	no kidding...crud! then run Techron FI cleaner? or do what Cadi did...correct the timing overlap issue?
	Appreciate 0 Quote

03-12-2013, 01:48 PM	#8
ian.j Enlisted Member 2 Rep 30 Posts Drives: 135i N55 DCT Join Date: Jan 2012 Location: central scotland iTrader: (0) Garage List 2011 135i [0.00]	i have seen videos where the valve cleaner is sucked up the vac hose into the intake to clean carbon. not sure if it works as i have never tried it on my car.
	Appreciate 0 Quote

03-13-2013, 08:40 AM	#10
shah269 Major 316 Rep 1,035 Posts Drives: 2009 Join Date: Oct 2011 Location: NJ iTrader: (0)	So to help reduce the issue all we need is to have our timing adjusted? I still think this is an enviromental issue. Say you have carbon build up. A chunk of carbon falls off....and lands on the cat and burns a hole through it....who covers that? You and I or BMW?
	Appreciate 0 Quote

03-13-2013, 07:18 PM	#11
loesch Captain 129 Rep 917 Posts Drives: 2011 BMW 135i M Sport Join Date: Feb 2012 Location: State College, PA iTrader: (4)	Anyone know if running an E85 mixture makes the situation worse?
	Appreciate 0 Quote