Carbon buildup

[Jake]

Hi Guys,
          Just found this browsing in the internet about carbon buildup on an FD:

If your carbon problem still persists, you can try “steaming” it out. This method seems a little safer than the harsher methods outlined below in the “Carbon Lock” section, but it’s still more direct than just driving your car hard. The basic theory is this:
You take an old windex spray bottle (any old spray bottle will do) and clean it out thoroughly. Fill it with water. Get an assistant to sit in with the car parked, and rev the engine to about 3k. With the top off the air cleaner assembly start spraying the heck out of that bottle. The engine will bog and you’ll be introducing water into the Air/Fuel mix. This water turns to steam inside the combustion chamber and the steam helps lift the carbon and send it out the tailpipe. Many people have reported good results with this method, but it’s still a little vague how much water you need or how long to do it for. Until I get more info and update the article, I say just use an entire bottle or two of water. You hand will hurt from all the squeezing, but hopefully your car will thank you.

Has anyone ever tried this?  Is it a safe and helpful thing to do?  Would it help carbon buildup at all?  I don\'t have any problems with carbin buildup (as far as I know) but just curious.  Cheers

Jake

[davegttph1]

probably drown your engine to be honest I think its the same theory as that 10k boost. I dont think I\'ll be trying it in a hurry

[nikp]

I have heard reports that there\'s no such thing as Carbon lock problems with rotaries - just a myth. But I have no opinion or hard facts either way!

[MillSpeed]

Jesus christ, that\'s gotta be a wind-up! Spraying big gobs of water into your engine? Fookin nuts! The only safe way to introduce water into the intake charge is with a proper water injection system, which introduces the water as a super fine mist. I\'ve heard of engines that run WI being torn down and the internals are spotless.

[rmagictastic]

the theory is good, but.........i would strongly suggest against performing this exercise.

the engine is not designed to recieve large quantities of water.

As mills said, water injection is a different matter, a tempered supply.

The idea being to make the air heavier and denser(colder) and as we all know, cold air=dense air, and the more air = more fuel=more power.

 I am sure that mills will tell you that this needs delicate set up, to provide the exact quantity of water under certain conitions.


N

[Donato]

Drop two tea bags and some sugar in there too and tell me if you get tea out of the exhaust..?  

[rmagictastic]

Drop two tea bags and some sugar in there too and tell me if you get tea out of the exhaust..?  

LOL

il have coffee with milk and 2 sugars please.  :cheers

[nikp]

I prefer mine with brown sugar and cream please!

[Jake]

Cheers guys, thought it sounded a bit dodgy so I thought I\'d ask about it...this forum\'s great      

[Trevrx]

Why is it dodgy? You will only be spraying a fine mist much the same as water injection, just at an earlier stage of induction.

[Martiny]

I would like to get Carl\'s perspective on this. It sort of sound feasible.

[nikp]

Well, i\'m not sure i\'d want to send a load a water through a turbo charger spinning at something like 150,000 rpm. I\'m no turbo expert, but a load of water going through a high precision item like a turbo could turn out to be a real problem!

[davegttph1]

Trev, a fine mist? at only 3k revs? the idea behind water injection is the water disipitates into the heat from the turbos when on full boost cooling it down.... too much of the water will just drown the engine....

[davegttph1]

spraying water INTO the turbo can cause the housing to crack.... hot metal and cold water do not go....

[nikp]

hot metal and cold water do not go....

Plus there\'s the momentum of the water droplets being flung about at 150,000rpm. Ok, so at idle on a cold car it probably wouldn\'t be so bad, as they won\'t be spinning, or not very fast. But the instructions say do it at 3000rpm (Engine speed) which means the turbos would be spinning.