Econoline E350 1 Ton V8-5.4L SOHC VIN L (1999)
Evaporative Fuel Vapor Return Hose: Description and Operation
The fuel vapors are routed:
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from the fuel tank through the fuel vapor vent valve.
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to the evaporative emission carbon canister.
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from the evaporative emission canister to the evaporative emission canister purge valve to the engine.
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the evaporative emission canister purge valve is controlled by the Powertrain Control Module (PCM).
