Well now I'm completely confused.

You have a hydrogen/oxygen generator. Since the chemical composition of water is H2O, then the gas given off is both hydrogen & oxygen.

It does not actually create a volume of gas that is greater than the water it is made from because that would crate a positive pressure [higher than atmospheric] Instead it must actually create a volume of gas that is less than the volume of water it is made from, thereby producing a negative pressure [less than atmospheric] & that is what would make a plastic bottle collapse inwardly or 'implode'. [according to the info that you provided]

So now this unstable & combustable hydrogen/oxygen gas, which is at lower than atmospheric pressure, is drawn into the carb via the distributor vacuum line.
It must be remembered that this is ported vacuum & is not operational at all when the engine is idling. There is also no appreciable vacuum at this point at high power settings & high loads [steep hills] so little or no gas would be drawn into the engine at a time when it most desperately needs it.
Also remember that the vacuum advance function relies on a vacuum signal to work, but if this vacuum signal is being killed by the inflow of gas through this port in the carb to run the engne, then the vacuum advance canister can not do it's job & the engine is running with spark retarded from the optimum position.

Next, we see that the engine is reved, [it's running on petrol/gasoline] & this combustible gas, at less than atmospheric pressure remember, is drawn into the engine via the tiny little drillings in the carb that are intended to provide a passage for distributor vacuum.

The engine still runs, but burnt hydrogen & oxygen gasses are re-formed back into water again which is seen at the tail pipe.

I have a couple of questions.

Since you could draw raw water into the carb, hell, you could even suck in a milkshake via the tiny little vacuum advance drillings & have the engine still running, what was it that was actually being demonstrated here?

If this system is to work, how do you match the production of the unstable & combustible hydrogen/oxygen gas to engine demand?

If production of gas is not matched, how do you safely store such a dangerous fuel [the gas] keeping in mind that the combustible element [the hydrogen] already has the oxidising agent [the oxygen] mixed in with it?

On combustion, does the gas expand & produce positive pressure, or does it implode & form a negative pressure in the combustion chamber?

How do you throttle the engine when running exclusively on hydrogen/oxygen?

Remembering that the gas is produced in a container with only one outlet, & the interior of the container is at less than atmospheric pressure [this is why we need glass jar & not a plastic one rememeber] how does the gas get from the jar to the carb?
If it is at lower than atmospheric pressure, it would tend to suck air into the jar, not transfer gas to the carb.
Simple pressure differential at work here.

It takes electrical power to convert the water to a gas & this is provided by the alternator which in turn is powered by the engine. If it takes more electrical power to convert the water to gas than the newly formed gas can in turn convert into additional power, then we have a net loss.
How have you measured the power gains?

The answers to these questions may really fuel my interest.

For what it's worth guys,i have an old(78)year old German engineer living next door,over the last few years he had been working on a hydrogen/petrol powered late 70's Mercedes Benz.Now doing what i do he was constantly keeping me up dated on his progress and showing me his handywork.I have to admit it all meant nothing to me and i did'nt understand what i was looking at as i;ve never seen so many one way valves relays etc.etc.etc. but i have seen this thing running and was amazed.
The sad part of all this is that the authorities quite recently got wind of what was going on in his shed when he tried to re register the old girl as a daily driver,and was threatened with all manner of grief unless the system was dismantled and disposed of in a manner suitable to our local Glovemit agency for fear of taking out our suburb in a catastrophic armageddon event!!

I guess i would'nt have known much about it had it gone,but it does beg the question about the politics of it all...After all they said Felix Wankel was a fool,Ralph Sarich,Henry Ford,the Wright Bros.the list goes on and on,i think it's called protection.

dogeman now your confuseing me
ill try and answer some q's
it implodes coz the amount of suction from the vac line ( when useing plastic )
yea you could tip water in the carbie or milkshack but the motor would die if the revs aren't high.. where this runs its very smoth if not better than with out hho when the hho is on

the vac line works has a excelerent eg when no vac line hho protuction is at a min when the vac line starts sucking it starts produceing lots

and it explodes

we haven't got to trying to run on straight hho eg no fuel

when the system is hooked up it doesnt draw much power so i dont see a problem hear eg old hillman with has a alterator for a car that had no factory sterieo and doesnt power things eg windows , and the hillman doesn't go flat ...doent sound like its loading up the motor when the hho cell is hooked up


and has i have said befor we arent interested in paying for dyno runs when theres lots of info on the net and why would we pay for a dyno when we know it works and not try to sell anything only trying to get the word out,, and buzy planning to get this on a v6 rodeo with efi ( unshore if the computer will like it )

i ran my car on coke,, the caffine keeps my baby going BAHAHA

what I would like to see is not a dyno run (unless its meant to improve power)

Go to a fuel station somewhere on the way out of town, fill it full tank of fuel. drive exactly 50km down the road and turn around and drive 50km back to the same fuel station.
fill it up again at the same pump, note how many litres it used.
connect the device up and take off exactly the same rate of acceleration, drive 50km down the road and back at exactly the same speed.
fill it up again at the same pump and note how many litres it used.
same day and within 1 hr or so means same temp, humidity and wind resistance.
same pump within 1 hr or so means same type of fuel ocatne, same error rate in litres.

that way u know exactly how many l/100km the same car uses with and without hydrgen input all else being equal.

well the old hillman is in miles and no trip meter and the speedo is very wavie eg traveling at 70mph speedo goes 50 90 50 90 ect ect so we have no fuel to miles ratio atm but we are now trying it fit the system to newer cars with good trip meters

but in the hillman we notic a good drop in fuel use and the people that have this setup clam between %25 to % 60 drop in fuel use pending driving style and wat car / motor

and this is in line with wat we think we are getting plz note that my dad is hillman mad and had them since the 1970s so he is intune with the fuel usage and i have all ways had hillmans up to a few years ago when i start to drift away from them and got into dattos

OK, this is geting complex, but has potential.

The gas, being complete with it's own oxygen, does not need to be mixed or calibrated & in modest doses should not affect the air/fuel ratio of the intake of petrol/gasoline.
It is used to suplement the gasoline component of the engines operation, but here's where it gets a little complex.

Production of the gas is greatest when manifold vacuum is highest, such as in light throttle cruise or when decelerating. This is when we don't want large volumes of gas.

Gas production is lowest when manifold vacuum is lowest, such as when towing up hills. This is when we want it the most, so vacuum is working against us.

This might be overcome with some kind of throttle linked potentiometer that ramps up the voltage at high throttle settings & shuts it down, perhaps even off at idle.
The multiplate electrodes [like plates in a battery] seem to have the greatest potential to produce large volumes of gas.

The more I learn the more complex a successful working system becomes, but success is achieveable as long as it is used as a suplement.
Since the gas adds combustion pressure when it is used it means that less throttle can be used to provide the same power output as before & the fuel savings are achieved that way but I don't know about a system where the engine runs on HHO alone.
Anyway, the whole thing has potential for those who are prepared to spend the time & some cash to install a properly engineered ststem but the simplistic systems that have been used for demonstration purposes so far don't come close to being a success in the long term.

I suspect that the extra gas being produced under vacuum is just water vapour, not hydrogen and oxygen. Water boils at 40 degrees on top of mountains, where atmospheric pressure is lower.

This bloke is aproaching the problem in a much more systematic way than any back yard inventor I have seen.
He is using electronics & is working with a firm called PWM [Pulse Width Modulation] to control the gas production.

He is using proper scientific approach & is publishing his results, good or bad, on u-tube for peer review. He is no dummy & he has a nice little workshop equiped with all sorts of electric & electronic test equipment.
He approaches each problem with an open mind & learns fron setbacks & failures.

Well worth a look when you have nothing else to do.

Lime water with two electrified platinum pieces will release pure hydrogen. Did this in science class. Deadly fun! maybe it can be used in a engine?