Water Cylinder Decarbonizing... Should I?

Test Subject: 1995 Blazer LT 4.3L CPI Vortec
Status: 125,000miles
Condition: Good, but definitely will have some carbon in the cylinders.

Now, I heard of the water decarboniztion people used to do with carbed vehicles and motorcycles and lately I haven't heard many people doing it. It is said to be the most effective way to clean pistons and combustion chambers.

On fuel injected vehicles, you mist water through a spay bottle into the throttle body or suck water through the PCV line which will atomize the water quite effectively when you hold the throttle to half.

Question is, has anyone done it here?

Should I try it?

And yes I did the combustion chamber cleaner and it did fuck all but foul my plugs.

What do you think?

How about "Sea Foam" in the gas?

Nah, sick of putting additives in my engine.

All it leads to is fouled plugs.

Trust me, I know this through experience with mine.

i do that to every vehicle i purchase. it wont mess anything up. the water during combustion turns to steam cleaning your combustion chamber. it smooths out the idle really good. the only thing it wont clean is the intake and back of the valves. it is only effective in the combustion chamber when the heat turns it to steam. for example: have you ever removed a cylinder head that was burning coolant? the cylinders that were burning the coolant were spotless and the others were carbonized. it works and i have done it plenty of times.

*Disclaimer: Do this at your own risk. I will not be held responsible for you doing this wrong and screwing your engine.*

Here is my CPI 4.3L Vortec.

http://www.tweaknews.net/decarbon/cold.JPG

Ok, well, I did it, I poured water through my engine. As mentioned earlier, water decarbonizing is a cheap and effective way to steam clean your cylinders and dissolve any carbon deposits in the combustion chamber.

Warm the truck up completely by taking a 15 minute drive to get it right up to temperature. Do NOT do this on a cold engine PERIOD!!!

How Much?:

http://www.tweaknews.net/decarbon/water.JPG

1.7 Litres (0.45 Gallons)

Through Where?

http://www.tweaknews.net/decarbon/pcv.JPG

PCV Line

Here is a video of the truck running just before I started the water.

http://www.tweaknews.net/decarbon/start.AVI (Right Click, Save As)

Method:

1.) Get a short glass like what is pictured above fill it and position it so the PCV line is just above the water line.

2.) Raise the rpms to 2000-2500rpms

3.) Slowly raise the glass so the PCV line is just above the water line. The suction is strong enough that it will start sucking in water. Just keep feeding the water slowly in with the throttle set to 2500rpms. After the water has all been sucked up for one glass, keep the revs up so it keeps on clearing the steam from the system.

DO NOT BE A COMPLETE IMPATIENT IDIOT AND JUST STICK THE HOSE INTO THE WATER AND SUCK IT ALL DOWN FAST! YOU WILL HYDROLOCK YOUR ENGINE AND DESTROY YOUR TRUCK. YOU HAVE BEEN WARNED!

4.) The engine will start to spit and sputter but keep the rpms high until it smooths out. Let it sit for a bit and get another full glass and repeat.

This is what you will see, some small amount of steam coming out of your exhaust.

http://www.tweaknews.net/decarbon/smoke.AVI <---Video Here (Right Click, Save As)

I didn't see any carbon or anything coming out the exhaust nor did I see the amount of steam I thought I was going to see, BUT, hold my hand over the exhaust had me feeling the water coming out the exhaust.

Here is a sound of the engine being responsive after the complete treatment.

http://www.tweaknews.net/decarbon/revclip.AVI <---Video here (Right Click, Save As)

The throttle is much more responsive, no hesitation whatsoever. Remember, this truck has over 125,000 miles on it.

Engine more responsive? Yes!
More Power? Can't tell, I am not a dyno.
Smoother? Bigtime!

Here is a small clip of me at 3/4 throttle. Hear the cold air intake howling!

http://www.tweaknews.net/decarbon/floor.AVI <---Video here (Right Click, Save As)

Let me know what you think.

IS THIS WORTH WHILE? YES!

I don't know if it will work on a fuel injected engine, but one of the best ways to cleanse a carburated engine's cylinders is put some diesel in the gas tank.