2. All models are equipped with a manual priming pump, which consists of a rubber bulb located on the right side of the engine compartment (pic. 2.2).
Pic. 2.2. Manual priming fuel pump
3. Some engines have an automatic bleed valve that purges air from the low pressure circuit when it is full. On engines without an automatic valve, the air bleed screw is located on the hollow bolt of the high-pressure pump inlet fuel line union. If there is an air bleed screw, loosen it half a turn.
4. Operate the booster bulb until the air outlet screw (in the presence of) fuel will not appear without air bubbles or until resistance is felt. Tighten the air release screw.
5. Turn on the ignition (to activate the stop solenoid valve) and keep pumping until you feel a lot of resistance, then pump a few more times.
6. If a large amount of air has entered the pump, wrap a rag around the union connection of the fuel return line on the pump (to collect escaping fuel), and then release the connection. Work as a pumping bag (with the ignition on, to activate the stop solenoid valve) or crank the engine several times with the starter in series of 10 seconds, ensuring that fuel flows from the fuel fitting without air bubbles. Tighten the connection and wipe up spilled fuel.
Attention! Be prepared to stop the engine immediately if it is about to start to avoid a jet of fuel and splashing out.
7. If air has entered the fuel lines of the injectors, wrap the fittings on the injectors with rags (to collect escaping fuel), and then release connections. Crank the engine with the starter until fuel comes out of the fittings, then stop cranking the engine and tighten the connections again. Wipe up spilled fuel. Refer to the warning given in the previous paragraph.
8. Start the engine with the accelerator pedal fully depressed. Additional rotation may be required to completely bleed the system before starting the engine.