Fuel system — filling and bleeding (Renault Clio 1)

1. After disconnecting part of the fuel supply system or after the fuel in the tank has been completely used up, the fuel system must be filled and bled.

2. Most models are equipped with a manual filler bulb, installed in the right corner of the engine compartment, in the supply line to the fuel filter. If there is no such bulb, as well as on later models with a Bosch injection system, it must be installed (they are available for sale as spare parts from Renault dealers), or use an alternative procedure.

3. On models equipped with a primer bulb, loosen the bleeder screw located on the top of the fuel pump near the inlet connector, then squeeze the bulb several times until fuel flows out of the screw without air bubbles (see illustrations).







Tighten the bleed screw and continue pumping the bulb until you feel a steady resistance. Try to start the engine at this stage by pressing the gas pedal all the way down and turning on the starter. Do not turn on the glow plugs. If the engine does not start within 15 seconds, turn on the glow plugs and then try starting the engine again.

4. On models not equipped with a filling bulb, the engine will be difficult to start. To avoid damaging the spark plugs and battery, turn the engine starter for 4-5 seconds, and then pause for 8-10 seconds. As soon as the engine starts, allow it to operate at an elevated idle speed until the idle speed stabilizes. Turn off the engine and start it again.

5. For all models, if a large amount of air has entered the system, wrap a rag around the fuel return coupling on the top of the pump and loosen the coupling. Squeeze the filler bulb until fuel flows from the connector without air bubbles - on models without a bulb, inject fuel into the pump with a syringe. Tighten the coupling and wipe away any spilled fuel.

6. If air has entered the injector tubes, wrap the injector couplings with a rag, then loosen the couplings. Crank the engine with the starter until fuel flows out of the coupling without air bubbles, then tighten the coupling. Wipe up any spilled fuel.

Warning: Be prepared to turn off the engine if it starts.

7. Try to start the engine by pressing the gas pedal all the way down and turning on the starter. Do not turn on the glow plugs at first, but if the engine does not start within 15 seconds, turn on the glow plugs and then try to start the engine again.