DIY Fuel Filter Drain And Replacement Mercedes-Benz Sprinter Oct 18, 2016Drain Fuel Filter DIY Quick Fix. Because this is a known problem with diesel engines, the fuel filter on the Sprinter can be drained using nothing more than a screwdriver, a pliers, and some patience. The fuel filter is located underneath the air filter cartridge, right on the top of the engine. You will have to remove all the clips to get it out. How to drain fuel filter for 519 cdi sprinter - Fixya Jan 23, 2012how to drain fuel filter for 519 cdi sprinter change fuel filter - Mercedes-Benz Sprinter question. Search Fixya. Browse Categories Answer Questions . Mercedes-Benz Sprinter Car and Truck; Mercedes-Benz Car and Truck Should I drain the tank and replace the fuel filter?