CITROËN C4 Grand Picasso 1.6 BlueHdi from 2017 - Irregularity in power delivery between 1900 and 2100 rpm

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CITROËN C4 Grand Picasso 1.6 BlueHdi from 2017 - Irregularity in power delivery between 1900 and 2100 rpm


Good morning, everyone,
in the car in question (entered because it was 'hiccupping') found filings in the diesel filter.
Replaced HP pump, injectors, return line, piping, rail with pressure switch, diesel filter + complete system and tank cleaning.
Now the car runs perfectly throughout the rpm range, except between 1900 and 2100 rpm, where, if the throttle is kept constant, it has jolts, like loss of fuel pressure.
Has this ever happened to anyone? What could it depend on?
Thanks for your help

Number plate - fj080ny -
Brand - CITROEN -
Model - C4 PICASSO II (3A-3E) C4 GRAND PICASSO -
Year – 2017 –
Displacement – 1500 –
Power supply - D -
kW – 88 –
Engine Code - BHZDV6FC -

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