Hi Steve
well done so far. i am interested in what changes you have done to the valves.
Kind Regards
Mark
Australia
Hi Mark and welcome to ionizationx
Basically, its all about setting them less open.
My exhaust valve did opened on the intake stroke. It was just a little bit, but totally unwanted with HHO. By setting it a little bit less tight, the valve now just opens only when it supposed to.
The intakevalve is also set less tight. Meaning, it closes earlier then on petrol.
The intake valve and your ignition are a couple that must set right.
If your ignition is firing too early and your intake is still a bit open, then you get flashbacks.
Thats basically what it is.
Hopes it helps.
btw.
The engine still runs great on petrol......So, the adjustments are not hugh, but for HHO on my engine absolute needed.