the k jet system is self bleed, they really are a rubbish system and the original meaning of "batch fire"
the injectors are constantly on tip open when running regardless what cylinder is on any cycle.
the fuelling is comprised of a lower and upper chamber in the metering unit which is controlled by the flap working from air pressure which in effect see saws the fuel delivery pin letting fuel from the bottom chamber to the top chamber (all 4 inj pipes).
very basic,very crude but worked.