Question about 2006 Jeep Liberty
The ORVR (On-Board Refueling Vapor Recovery) system consists of a unique fuel tank, flow management valve, fluid control valve, one-way check valve and vapor canister.
The ORVR (On-Board Refueling Vapor Recovery) system is used to remove excess fuel tank vapors. This is done while the vehicle is being refueled..
Fuel flowing into the fuel filler tube (approx. 1 inches I.D.) creates an aspiration effect drawing air into the fuel fill tube. During refueling, the fuel tank is vented to the EVAP canister to capture escaping vapors. With air flowing into the filler tube, there are no fuel vapors escaping to the atmosphere. Once the refueling vapors are captured by the EVAP canister, the vehicle's computer controlled purge system draws vapor out of the canister for the engine to burn. The vapor flow is metered by the purge solenoid so that there is no, or minimal impact on driveability or tailpipe emissions.
As fuel starts to flow through the fuel fill tube, it opens the normally closed check valve and enters the fuel tank. Vapor or air is expelled from the tank through the control valve and on to the vapor canister. Vapor is absorbed in the EVAP canister until vapor flow in the lines stops. This stoppage occurs following fuel shut-off, or by having the fuel level in the tank rise high enough to close the control valve. This control valve contains a float that rises to seal the large diameter vent path to the EVAP canister. At this point in the refueling process, fuel tank pressure increases, the check valve closes (preventing liquid fuel from spiting back at the operator), and fuel then rises up the fuel filler tube to shut off the dispensing nozzle.
Posted on Dec 23, 2008
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Posted on Jan 02, 2017
SOURCE: 2006 jeep liberty will not
The gas pumps are designed to click off when the tank is full,so either the metal flapper"anti-siphon" is obstructing the fuel nozzel,or the vent from the tank to the fuel filler is plugged and the air pressure coming back up the filler neck is clicking pump off,try pulling the nozzel out a little and see if it helps.also another thought which is most likely visually look at the rubber fuel filler tubes there are 2 the big one is fuel the little is for a vent see if they have any kinks or tight bends pinching them and restricting fuel flow.
Posted on Dec 30, 2008
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