Fuel filter (Nissan Bluebird T12)

The fuel filter is designed to clean the fuel from foreign particles and moisture. The fuel filter housing also contains a manual fuel pump, which can be used to pump the system to fill it with fuel when the engine is not running or to remove air from the system, and a sensor for the amount of water accumulated in the filter housing, which turns on the filter indicator light on the instrument panel when about 140 ml of water has accumulated in the filter. Flashing of this indicator light on turns or its steady glow when the engine is running warns the driver of the need to drain the water from the fuel filter and then remove air from the system.

The filter is usually supplied as a spare part without a sensor, since Japanese companies allow the use of a previously installed sensor with another filter. To drain water from the fuel filter, place a suitable container under it, unscrew the drain plug a few turns and drain the water until clean fuel comes out of the drain hole. After draining the water, be sure to bleed the system to remove air from it. To do this, unscrew the air bleed plug on the filter cover, turn the manual pumping handle and bleed the system until clean fuel without air bubbles comes out of the air evacuation hole.

Without stopping bleeding, tighten the air bleed plug. The system can also be bled by towing the car with the gear engaged. In this case, bleeding is more effective. The presence of air in the system leads to uneven engine operation, which is eliminated after bleeding the system. To replace the filter, remove it using a special device, remove the sensor from it, install the sensor on the new filter and install the new filter.