WE HAVE A 86 TOYOTA PICKUP- PRESSURE FROM THE FUEL TANK IS CAUSING GAS TO FLOW THROUGH THE FILTER ON FIREWALL WHY
1986 TOYOTA PICKUP PRESSURE FROM FUEL TANK IS CAUSING GAS FLOW THOUGH CARBON FILTER -WHAT DO WE DO- MOTOR ITSELF RUNS FINE GAS CAP IS ONE WAY CAP
Sounds like the purge valve for the EVAP system is stuck open and allowing raw fuel to be sucked up through the EVAP vacuum lines. HTH. - Jim
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