Webtwo valves are located in the supply pump (1). Webvolvo trucks has identified through remote diagnostics that the vehicles in this service campaign have experienced faults with the electronic pressure relief valve (eprv). The safety valve (11) allows fuel to flow back to the suction side when the pressure becomes too high, e. g. , if the fuel filter is.

Webvisual inspection of fuel sample. Allow the vehicle to sit on a reasonably level surface with the engine off or at least one hour to give fuel tank content a chance to settle.