Problem is:
@4400RPM i can read 16,5 l/h - i thinks it's little to high but ok.
@2000RPM i can read about 0,6-3 l/h I think it's to low
What can be problem? I replaced fuel flow sender to new one, jet niddle is fully inserted according to manual. Sender is installed after filter and before water separator with outlet higher (abour 40 degrees). Wiring looks good. What can be wrong with this?