Has it been determined if its an ignition problem? Your absolutely correct Hebrew

 

NO they use the cam // it sets the timing location and the processer in the ignition to sets the timing at speeds up and down - the VOES retards the timing to keep it from pinging going up hills or WOT < its a first design knock sencer

 

I had similar problem caused by using car inline fuel filter. It hadn't provide enough flow of fuel and engine died, mostly at highway speed.