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Old 09-29-2003, 07:52 PM   #21
Craig
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I set up a water injection system on my '95 SW2, using the airbox resonator muffler as a container for water/alcohol and running a length of vacuum hose to a brass aquarium valve and on to an unused port on the throttle body ('94 and down use this port for the EGR). This has worked pretty good; lower emissions, better gas mileage, improved performance (especially with alcohol), and the combustion chambers must be carbon-free, because at the last 30K service the plugs were very clean.

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Old 09-29-2003, 09:27 PM   #22
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Detail with pictures, please.

How much lower emission? How much better gas milage? How much water? How much performance?

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Old 10-21-2003, 08:10 PM   #23
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I did this procedure today using about 2 quarts of water.

I poured the water in on the fast side, the engine started to stumble on more than one occasion. Upon completing, the engine still misfired a little bit for at least 30 seconds or so, then continued to run normal.

There was a small puddle of water on the ground, and heavy steam was coming out of the tailpipe for at least another 30 seconds. The "steam" did resemble oil burning somewhat, as it had a slight blue hue to it, but it did not smell as if any oil was burning.

Well see if it did any good after the drive to/from work tomorrow. Thanks for the tip!

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Old 10-31-2003, 05:26 PM   #24
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Man, I haven't heard of this procedure for many years. My dad's old mechanic was a big proponent of this; I remember doing it to my dad's '71 Olds 98.

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Old 11-22-2003, 11:39 PM   #25
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Default should i do it

yes i checked this post and i was wondering something.my CAR HAS ABOUT 10,265 MILES ON IT. should i do it this early in engine life and will it make a DIFFERNCE OR DOES THIS PROCESS ONLY WORK SUBSTANSALLY ON HIGH MILEAGE ENGINES .???

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Old 11-23-2003, 12:59 AM   #26
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It certainly wouldn't hurt, however I doubt much carbon has accumulated on an engine that new.

I suppose if you do this religiously (i.e every 10k or whatever interval), the carbon would not have a chance to build up significant amounts, and may help in the long run.

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Old 11-23-2003, 09:59 AM   #27
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Where does the carbon go?Will it clog up the exhaust valves of you free up all that carbon in one shot?

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Old 11-23-2003, 11:20 AM   #28
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The water softens the carbon and mixes with it causing it to burn out of the cylinders in the form of steam. I wouldn't do it to an engine that new. You also have to be pretty careful with this procedure as a little too much water will be the end of that nice new engine.

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Old 03-25-2004, 10:25 PM   #29
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I this the same thing as putting MMO into the crankcase, fuel system, and/or doing a piston rign soak with it?

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Old 04-04-2004, 03:50 PM   #30
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I just performed this procedure yesterday, used a half gallon of water. No problems at all, lots of steam coming from the tailpipe, and a nice black suit left on the cement... opps. However, afterwords, i got in, and drove it off. I noticed a gain in power, and today i pulled the plugs, they were almost as clean as when i got them. Thanks for the procedure.
Now, how often do we do this to keep everything nice and clean?
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Old 04-07-2004, 09:46 PM   #31
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this might be a dumb question, but how do you know how high you're revving it if you're outside pouring water into it?

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Old 04-07-2004, 09:51 PM   #32
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go inside and rev it...listen to it...then match that up while you're on the outside...be safe do it to about 2500...another thing you can do is a 50/50 mix of denatured alcohol and water.

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Old 04-08-2004, 09:49 AM   #33
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This is an interesting thread! Following this procedure with either water or a solution of water and alcohol sounds like a good idea.

I am curious. Could we do this with Berryman B-12 or the popular Marvel Mystery Oil (MMO) too? If so, how would the results compare to doing the cleaning with either water or water/alcohol? Better? Same? Worse? Or would this be a bad idea since these two products are probably flammable?

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Old 04-08-2004, 11:20 AM   #34
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They're too rich to burn, like carb cleaner. Don't pour them in, spray them if you must.

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Old 04-08-2004, 06:03 PM   #35
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I doubt those products are water soluble. MMO and other strong solvents will probably burn before they do much of anything as they are not in the combustion chamber long enough.

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Old 04-09-2004, 02:43 PM   #36
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Thanks. I'll give it a try using water.

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Old 04-09-2004, 03:08 PM   #37
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awesome.

I just tried this (and I am by no means a mechanic. It took me more time to figure out how to get the hose off of the TB that to do the whole process). I used about 1/2 gallon of water. I'm not exactly sure how much stuff I got out, though there was a decent sized black ring on my driveway.

Im not even sure if I did it correctly. I think I may have only been pouring at about 1.5-2K instead of 2-2.5k. There was only heavy steam about 1/3 of the time (usually when the engine started to stumble and I gave it a little more juice)

But I took her on a highway run afterward, and it felt smoother, and idling at red lights seemed considerably smoother.

so, thanks. maybe ill try it again in another couple of weeks and see if I missed any

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Old 04-17-2004, 04:09 PM   #38
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Quote:
Originally posted by amazinghl
I poured at least a qt of water in the engine. Tailpipe had NOTHING come out.
Quote:
Originally posted by Applefool
I did this today with a spray bottle and didn't really notice much of any difference. I probably didn't use enough water. I used a full spray bottle, maybe 16 oz or so, and held the throttle open and just sprayed it in. it got slightly stumbly a couple times, but i just compensated a bit with the throttle. Not sure if it did any good. Didn't really notice anything making it out the tailpipe.
I did it today using 2 quarts of water after a long highway drive. The engine stumbled and jumped around a lot. Several times and again at the end I checked the tailpipe and the ground below. Nothing came out - no steam, no dark clouds, and nothing on the ground. Maybe amazinghl, Applefool, and I already had clean combustion chambers?

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Old 04-17-2004, 05:34 PM   #39
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David,how did you introduce the water into the throttle body?

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Old 04-17-2004, 05:37 PM   #40
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Quote:
Originally posted by David 93 SL2m
I did it today using 2 quarts of water after a long highway drive. The engine stumbled and jumped around a lot. Several times and again at the end I checked the tailpipe and the ground below. Nothing came out - no steam, no dark clouds, and nothing on the ground. Maybe amazinghl, Applefool, and I already had clean combustion chambers?
even if it were clean, there would be at least a little steam.

its entirely possible that you just didn't pour the water fast enough. I know that I only got the steam clouds when I poured in very liberal amounts. Try it again in a few weeks, just be ready to nudge that throttle a bit more

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