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Water-In-Fuel Warning System

The fuel injection system includes a water and sediment filter in addition to the sealed cartridge filter. This unit traps water which may be present in the fuel system and holds it, preventing damage to the injection pump.

A warning light and buzzer signal when the water level is high enough to require draining. A float is lifted by the water level, causing a magnetic switch to close and provide continuity to the warning light and buzzer circuit. A small hand pump is provided so the water separator and filter can be purged of air.

Fig 1: Exploded View of Fuel Injection Nozzle
G34676Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Water-In-Fuel Warning System
G34675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002