Rodeo (4WD) V6-3165cc 3.2L SOHC (6VD1) (1993)
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Fuel Filler Cap: Description and Operation
Fuel Filler Cap
PURPOSE
Seals the fuel filler inlet, allows air to enter the fuel and, and vents excessive fuel tank pressure
OPERATION
The fuel filler cap has both a vacuum valve and a pressure valve. If a negative pressure develops in the fuel tank, the ambient valve of the fuel
filler cap will open. Ambient air will flow into the fuel tank through the vacuum valve.
When the development of a positive pressure in the fuel tank exceeds a specific value, the pressure valve will open and the fuel vapor will escape
into the atmosphere. This valve does not function under normal operating conditions.
