The HHO gas and all the other contaminants come into contact with the inectors in two possible places depending on where the injector injects the fuel.
On some cars, the injectors spray the fuel directly at the intake valve. Right there the air is mixed with fuel.
On other systems, the injectors are in the combustion chamber. In either case, the air and fuel do mix near the injector tip.
The air with the contaminants mix at that point. The business end of the injector, which is really just a real tiny spray hole with an electronically actuated needle valve, gets contaminated from the HHO gas with caustic soda when the mixture is swirling around that area.
It does not take a whole lot of contamination to mess up an injector.
There is a blowback factor even if the injector is recessed to prevent such happenings.
As far as the HHO not being part of the fuel system, well air is part of the fuel system. It is a subset of the fuel air system. No air, no burning of fuel. Oxygen, nitrogen and other trace gases are part of the fuel system. The manifold is part of the fuel system. So putting contaminated HHO into the air box or manifold IS modifying the fuel system.
Sodium hydroxide or potassium hydroxide is a very needed part of the electrolysis system. Using just tap water or spring water results in a build up of sludge in the HHO unit and causes a short to develop in the unit. So using distilled water is a must. The purer the better.
Running just water is not a good answer. Far less output of HHO is what you get when running just tap or well water.
Caustic lye is needed because it allows for free flow of electrons in distilled water which is actually has insulating properties due to its purity and lack of minerals which resists the free flow of electrons needed to facilitate the release of hydrogen and oxygen. Caustic lye also allows for cleaner running of the HHO unit.
The problem with caustic lye or any other chemical being used as a carrier in the electrolyte is the problem of contamination. Bubblers help but do not totally remove the problem.
You've said in your last post that I am lying. I ask you to provide evidence that what I have been posting is wrong.
Yes people need help at the pumps. But I have yet, I repeat, I have yet to see the advantage of running HHO in a car. Not one case yet of scientific evidence that HHO gives you better mileage.
HHO makes a great torch. I built one myself and I love messing with it. It burns through steel real good and heats up things really quick. I even like making fireworks with balloons (makes real loud explosions !!!!)
I've had a little over four years of playing with HHO. I've made my own systems and have bought others. I've installed units my friends bought and so far every one of them is now sitting in a junk pile somewhere.
I have fried alternators powering some of them and destroyed batteries by asking for too much amperage. All in the name of saving gasoline. I've experimented with ideas put forth on the net and all to no gain.
Like I have said in previous postings. HHO is fun to experiment with.
It is not the answer to high gas prices other than to give a lot of gas money to people who sell this junk to others.
No major manufacturers are using HHO to help with combustion. There is a very compelling reason for that. It is not viable.
Believe me on this one. Car companies are always looking for ways to improve mileage. Especially now since gasoline and diesel are so high. And now with government mandates for improved fleet mileage, do you really think that a technology that promises so much would be ignored by FOrd or GM who are on the verge of going bankrupt because of high fuel prices? Think man...... think !!!!!!
Maybe you should change your posting name to CAUSTIC LYE.