Charger L4-135 2212cc 2.2L SOHC VIN B 2-bbl (1982)
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Fuel Filler Cap: Description and Operation
The fuel tank is sealed with a special engineered pressure vacuum relief filler cap. The relief valves in the cap are a safety feature, and operate
only to prevent excessive pressure or vacuum in the tank caused by malfunction in the system or damage to the vent lines.