122 F2B ENGINE T RAKKER E URO 4/5 Figure 249 60671 1. Fuel valve - 2. Plunger - 3. Fuel outlet - 4. Filling and backflow passage End of injection Injection ceases when the fuel valve (1) opens, at a certain point in the down stroke of the plunger, after the solenoid valve gets de-energized. The fuel flows back through the open valve (1), the injector holes and the passage (4) into the cylinder head. The time for which the solenoid valve stays energized, appropriately calculated by the electronic control unit, is the duration ofinjection (delivery)and it depends on the working conditions of the engine. Base q November 2006 Print 603.93.641