Allante V8-273 4.5L (1991)
Fuel Filler Cap: Description and Operation
The fuel tank filler cap is equipped with a "turn to vent" screw on type cap which incorporates a rachet to prevent overtightening.
The "turn to vent" feature allows fuel tank pressure relief prior to removal. Instructions for proper use are imprinted on the cap cover. A vacuum safety
relief valve is incorporated into this cap. A separate pressure relief (vent) is located under the vehicle.
CAUTION: If a fuel filler cap requires replacement, only cap with the same features should be used. Failure to use the correct cap can result in a
serious malfunction of the system.
