Renault Megane, Scenic

Since 1996 of release

Repair and car operation

Check, removal and installation of the proof-reader of the moment of injection at cold start

The following procedure is applicable only to engines F8Q 620. On engines F9Q work of system of start from a cold condition operates ECU injection systems.

CHECK

1. To check up system action, start the engine (cold) and listen to character of its work, the detonation or rigidity should disappear through time from 30 seconds till 2 minutes of 45 seconds. It means that the system works correctly. 2. If there are suspicions that the system does not work, check up pressure presence on a feeding wire of a winding of the valve at the included starter and within 5-6 seconds after engine start (food giving on a winding copes the block of system of preheat). 3. If pressure of a food is present, but the system does not work, the electromagnetic valve is possibly faulty, and it is necessary to replace it.

ENGINE F8Q

REMOVAL

Be cautious, do not suppose dirt hit in the fuel pump. At installation use a new sealing washer. 1a. An electromagnet (4) advancings of injection at cold start - ТНВД Bosch 1b. An electromagnet of an advancing of injection at cold start - ТНВД Lucas 1c. Disconnect a cable of weight from the battery (address to the Head the Electric equipment of the engine for models Scenic), then disconnect electroconducting of a winding of the valve. If the autoradio tape recorder in your car is coded before to disconnect the battery, be convinced that you know a code. 2. Turn away the electromagnetic valve from the pump and clean a washer. Work very cautiously not to admit dirt hit in the pump.

ENGINE F9Q

REMOVAL

1. Loosen the bolts of tubes of a high pressure on the fuel pump and fuel atomizers. Remove tubes. To prevent penetration of a dirt into the block, close the ends of branch pipes cut off from a rubber glove (the pure!) fingers. 2. Disconnect two sockets of electroconducting from the pump. 3. Remove the right plate of fastening of the pump to the engine. 4. Remove a steel plate. This plate is kept by a bolt of fastening of a hydraulic head. 5. Clear a place of fastening of the electromagnetic valve of correction of the moment of injection to the pump, then remove the valve.

ENGINE F8Q

INSTALLATION

1. Make installation in return sequence, use a new sealing washer.

ENGINE F8Q

INSTALLATION

1. Make installation in return sequence, use a new sealing ring. Observe the moments of an inhaling of a bolt of fastening of a hydraulic head and bolts of fastening of the valve.