Engine carbon Clean - snake oil?
Discussion
My bulls
tometer spins like crazy when they claim it cleans the inlet manifold and egr - it's not in the path of the combustion process and as the poster above alludes to, it's either rock-hard or very soft consistency and not easily removed physically - so i cant see how some gas or water is going to do anything until it enters the combustion chamber.
tometer spins like crazy when they claim it cleans the inlet manifold and egr - it's not in the path of the combustion process and as the poster above alludes to, it's either rock-hard or very soft consistency and not easily removed physically - so i cant see how some gas or water is going to do anything until it enters the combustion chamber.Paul578 said:
No it's not dihydromonoxide either, the present wikipedia entry starts >
"Oxyhydrogen is a mixture of hydrogen (H2) and oxygen (O2) gases. This gaseous mixture is used for torches to process refractory materials and was the first gaseous mixture used for welding. Theoretically, a ratio of 2:1 hydrogen : oxygen is enough to achieve maximum efficiency; in practice a ratio 4:1 or 5:1 is needed to avoid an oxidizing flame.
This mixture may also be referred to as Knallgas (Scandinavian and German Knallgas: "bang-gas"), although some authors define knallgas to be a generic term for the mixture of fuel with the precise amount of oxygen required for complete combustion, thus 2:1 oxyhydrogen would be called "hydrogen-knallgas".
The term Brown's gas refers to oxyhydrogen with a 2:1 molar ratio of H2 and O2 gases, the same proportion as in water. It was named after its Bulgarian inventor Yull Brown (born Iliya Valkov, Bulgarian: ???? ???????? ??????), who suggested it to be produced by the electrolysis of water to be used as a fuel for the internal combustion engine. Later "Brown's gas" and HHO has become fringe science terms for a 2:1 mixture of oxyhydrogen obtained under certain special conditions; its proponents claim that it has special properties."
Still laughing???
Yep."Oxyhydrogen is a mixture of hydrogen (H2) and oxygen (O2) gases. This gaseous mixture is used for torches to process refractory materials and was the first gaseous mixture used for welding. Theoretically, a ratio of 2:1 hydrogen : oxygen is enough to achieve maximum efficiency; in practice a ratio 4:1 or 5:1 is needed to avoid an oxidizing flame.
This mixture may also be referred to as Knallgas (Scandinavian and German Knallgas: "bang-gas"), although some authors define knallgas to be a generic term for the mixture of fuel with the precise amount of oxygen required for complete combustion, thus 2:1 oxyhydrogen would be called "hydrogen-knallgas".
The term Brown's gas refers to oxyhydrogen with a 2:1 molar ratio of H2 and O2 gases, the same proportion as in water. It was named after its Bulgarian inventor Yull Brown (born Iliya Valkov, Bulgarian: ???? ???????? ??????), who suggested it to be produced by the electrolysis of water to be used as a fuel for the internal combustion engine. Later "Brown's gas" and HHO has become fringe science terms for a 2:1 mixture of oxyhydrogen obtained under certain special conditions; its proponents claim that it has special properties."
Still laughing???
rayyan171 said:
I have a feeling these will do wonders on most VAG TSI/FSI engines, they are the engines which seem to have the most carbon build up on the intakes and ports, known to rob owners of 30hp in some cases.
As for diesels, probably clears the soot from inlets.
It will make absolutely no difference!!!!! I can tell you that for a fact.As for diesels, probably clears the soot from inlets.
Most only go through the fuel system... DI engines get no fuel over their valves - which the TFSI etc is.
Secondly, have you ever actually manually cleaned the inlets? Cos I have, and no amount of "gas" fed over them will clean off the dirt,
The only way to get this done is to remove the inlet and manually clean, walnut blast or similar ....
To be honest on most turbocharged engines you tend not to notice much of a performance loss... on NA eg RS4 then you will.
Generally a cup of water is all you need to de-carbon the valves on your engine..
https://www.youtube.com/watch?v=KFtp_jmLF3k
https://www.youtube.com/watch?v=KFtp_jmLF3k
There was an episode of wheeler dealers on earlier today (on Discovery Turbo I think, or maybe Quest) where Edd China was working on an XK8.
I'm not sure if it was the same thing as advertised in my original link but it DID supposedly remove carbon deposits from the engine. I was only half paying attention but it went something along the following lines.
Edd hooked up the XK8 to an emissions testing machine similar to what they use for MOTs. It passed on CO emissions but failed on the particulates. So he hooked it up to this machine which put a special kind of fuel into the engine which burned a lot hotter than normal fuel and burned off a lot of the carbon deposits. There were two different liquids that were used, a "pre combustion cleaner" and another one (which I assume was the bit that cleaned inside the combustion chamber itself).
Anyway, apologies for the somewhat basic explanation but Edd certainly seemed convincing that these things work/are beneficial.
ETA : Linky below seems to relate to the episode I watched.
https://www.jaguarforum.com/showthread.php?t=46057
I'm not sure if it was the same thing as advertised in my original link but it DID supposedly remove carbon deposits from the engine. I was only half paying attention but it went something along the following lines.
Edd hooked up the XK8 to an emissions testing machine similar to what they use for MOTs. It passed on CO emissions but failed on the particulates. So he hooked it up to this machine which put a special kind of fuel into the engine which burned a lot hotter than normal fuel and burned off a lot of the carbon deposits. There were two different liquids that were used, a "pre combustion cleaner" and another one (which I assume was the bit that cleaned inside the combustion chamber itself).
Anyway, apologies for the somewhat basic explanation but Edd certainly seemed convincing that these things work/are beneficial.
ETA : Linky below seems to relate to the episode I watched.
https://www.jaguarforum.com/showthread.php?t=46057
Edited by Countdown on Saturday 16th June 12:51
Particulates = soot from incomplete combustion. I fail to see how cleaning the combustion chamber would sort that out. Dirty plugs could be the cause, or poor fuel atomisation. In which case clean/replace the plugs, and clean injectors.
Running rich could also be the cause, but if the co levels check out then that's not the problem. Timing as well, but if that's the cause then it looks like you have bigger issues.
The Audi RS4 (b7) is notorious for getting coked up. This is because it has direct injection and the soot from egr and oil from PCV congeals in the inlet ports as there is nothing to wash it away, which causes a restriction and saps power. The only way to remove that is to mechanically clean it.
I've seen coking in industrial engines. It's baked on hard like concrete and nothing other than mechanical cleaning and elbow grease removes it. Albeit this is an extreme case as it was being run on gas, but coking is coking.
Running rich could also be the cause, but if the co levels check out then that's not the problem. Timing as well, but if that's the cause then it looks like you have bigger issues.
The Audi RS4 (b7) is notorious for getting coked up. This is because it has direct injection and the soot from egr and oil from PCV congeals in the inlet ports as there is nothing to wash it away, which causes a restriction and saps power. The only way to remove that is to mechanically clean it.
I've seen coking in industrial engines. It's baked on hard like concrete and nothing other than mechanical cleaning and elbow grease removes it. Albeit this is an extreme case as it was being run on gas, but coking is coking.
Edited by hooblah on Saturday 16th June 13:23
Guy in the unit next to us has just bought a misfiring Golf petrol of 54 plate vintage. Said he has taken the head off as it was totally clogged up with soot and carbon stuff. He is going to clean it out by hand on the bench and chuck it back together. Seems in his eyes the best way to do it without any of this carbon clean stuff involved. He only wants it as a pop around car , so performance isnt top of the agenda, but running on 4 cylinders is.
hooblah said:
Particulates = soot from incomplete combustion. I fail to see how cleaning the combustion chamber would sort that out. Dirty plugs could be the cause, or poor fuel atomisation. In which case clean/replace the plugs, and clean injectors.
Running rich could also be the cause, but if the co levels check out then that's not the problem. Timing as well, but if that's the cause then it looks like you have bigger issues.
The Audi RS4 (b7) is notorious for getting coked up. This is because it has direct injection and the soot from egr and oil from PCV congeals in the inlet ports as there is nothing to wash it away, which causes a restriction and saps power. The only way to remove that is to mechanically clean it.
I've seen coking in industrial engines. It's baked on hard like concrete and nothing other than mechanical cleaning and elbow grease removes it. Albeit this is an extreme case as it was being run on gas, but coking is coking.
Found this thread which shows photos of the inlet after carbon cleaning - it did nothing.Running rich could also be the cause, but if the co levels check out then that's not the problem. Timing as well, but if that's the cause then it looks like you have bigger issues.
The Audi RS4 (b7) is notorious for getting coked up. This is because it has direct injection and the soot from egr and oil from PCV congeals in the inlet ports as there is nothing to wash it away, which causes a restriction and saps power. The only way to remove that is to mechanically clean it.
I've seen coking in industrial engines. It's baked on hard like concrete and nothing other than mechanical cleaning and elbow grease removes it. Albeit this is an extreme case as it was being run on gas, but coking is coking.
Edited by hooblah on Saturday 16th June 13:23
https://forum.rs246.com/viewtopic.php?f=35&t=1...
Also shows photos after MRC cleaned it manually.
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