Diesel low pressure problems in Accent Crdi

I have a 2005 Accent Prime diesel, and something similar happened to me... in fact, it's happening to me now... and I asked at a shop, and they tried to extort money from me... I know a little about mechanics, and it wasn't necessary to leave the vehicle at the shop like they asked me to... the mesh is a protective element; don't remove it because the pump will last much less time due to the impurities in the fuel... the part is here... that piece is the rail sensor... the one with a microfilter at the end... remove that piece and blow it out with compressed air or have it ultrasonically cleaned at a place that repairs fuel pumps... that will solve the problem.