How do you change vapour canister vent valve on 2010 Ford F-150 4.6 3v. I have the canister on work bench but can't figure out hot to get the vavle out

Fuel cap leaking maybe.

Ford Crown Victoria Police Interceptor,

https://www.google.com/search?q=%E2%80%8BFord+Crown+Victoria+Police+Interceptor+canister+vent+valve+diagram

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Found this on YouTube. How to Test and Replace EVAP Pressure Sensor P0450 Its behind the drivers side rear tire.

Compliance with emission regulations means vapours from the engine crankcase and fuel tank can no longer be vented to the atmosphere as in the old days so excess fuel vapours from the tank are collected in a canister filled with carbon and then released into the engine air intake when the engine management programme decides is the optimum conditions for doing so.

The venting or purging operation is controlled by the ECU operating an electrical or solenoid valve and on some vehicles this can be heard pulsing when the engine is hot and idling.

Most problems with the system are caused by faulty wiring, connectors, the valve itself or the ECU. If the system is sophisticated the ECU might expect to record a slightly richer air/fuel mixture during venting and so if there is problems with the pipework or canister enrichment might not happen and be recorded as a fault.

This Pinpoint Test is intended to diagnose the following:

• Canister vent (CV) solenoid (9F945) (electrical concern only)
• Fuel filler cap (9030)
• Fuel tank pressure (FTP) sensor (9C052)
• EVAP canister tube (fuel tank to EVAP canister)(9A228)
• Fuel canister purge outlet tube (EVAP canister to EVAP canister purge valve) (9D661)
• EVAP return tube (EVAP canister purge valve to intake manifold) (9G271)
• EVAP canister purge valve (9C915)
• Vacuum source line (input port vacuum to intake manifold)
• Harness circuits: CV, FLI, FTP, EVAP Canister Purge Valve, SIG RTN, vehicle power (VPWR), reference voltage (VREF) and power ground (PWR GND)
• Powertrain control module (PCM) (12A650)

This Pinpoint Test is used as an assistance in diagnosing the following EVAP components:

• EVAP canister and bracket assembly (9E857)
  • EVAP canister sleeve assembly (fitting)(9D925)
  • Canister vent (CV) solenoid - hose assembly (9F976 or 9K318)
  • EVAP canister (9D653)
  • Canister vent (CV) solenoid (9F945)(mechanical concern only)
• Fill limit valve assembly (9A086)
• Fuel filler pipe flapper valve (9B085)
• Fuel filler pipe check valve (9189), assembly (9285)
• Fuel tank filler pipe (9034)
• Fuel tank assembly (with fuel vapor vent valve) (9K007)
• Fuel tank assembly (without fuel vapor vent valve) (9002)
• Fuel vapor control valve (9B190)
• Fuel vapor vent valve (9B593)
• Liquid/vapor fuel discriminator (9G332)
• On-board refueling vapor recovery (ORVR) T - connector assembly (9S314)

Description For additional information on the Evaporative Emission (EVAP) System, refer to Section 1A .
For additional information on the Evaporative Emission System Monitor, refer to Section 1A .
Pinpoint Test Schematics Escort/Tracer (2V)

Continuous Memory Diagnostic Trouble Code (DTC) P0446 or P1450 indicates that Self-Test has detected the Evaporative Emission Control System has excessive fuel tank vacuum. Also, a DTC P0446 indicates a vent control malfunction.

Possible causes:

EVAP canister purge outlet tube (EVAP canister purge valve to EVAP canister) blockages or kinks.

EVAP canister tube (fuel tank to EVAP canister) blockages or kinks.

Fuel vapor elbow on EVAP canister contaminated.

Restricted EVAP canister.

Canister vent (CV) solenoid stuck closed (partially or fully).

Plugged or contaminated CV solenoid filter.

EVAP canister purge valve stuck open.

Fuel filler cap stuck closed (no vacuum relief).

VREF circuit open in fuel tank pressure (FTP) sensor.

Damaged FTP sensor. (fuel tank pressure)

Check for kinks or bends in the fuel vapor hoses/tubes (EVAP canister purge outlet tube and EVAP canister tube).

Visually inspect EVAP canister inlet port, CV solenoid filter and canister vent hose assembly for contamination or debris.

Check CV solenoid filter for blockage or contamination.

The common things I've seen are are mud in the canister and the canister vent solenoid being shot or the wiring to the canister vent solenoid being torn off. The resistance of the solenoid should be 48-65 ohms..
Pick up a Chiltons book and will give you a diagram of where exactly you find the canister. They are like $15 at any auto store. Good luck

i work at GM and we replace the vent vavles alot,along with evap canister and filter. but mostly due to dirt and mud sucking up into the filter .the filter is located left side of transmission by cross member,unless its been relocated already.evap canister is located at the front of gas tank or rear of it ,vent vavle is close to it .it is connected to evap canister with a tube or pipe witch ever you would like to call it. check evap for dirt or dust could be clogged.

The two codes may refer to the same fault/ THe p0107 says that the Manifold absolute pressure is wrong in other words the amount of air gaining entry to your inlet manifold is incorrect. The P0449 says that the vent valve on the vapour emission control system is open. I think it is more than likely that the open vent valve is allowing air to be sucked into the inlet manifold and this is also being noted by the MAP sensor. If it easy replace the vent valve. A quick fix just to keep you going until the vent valve can be replaced is to locate the vacuum line supply from the vapour emission control charcoal canister and to clamp it closed. This will remove the MAP sensor error and allow the engine to run as it should. THis is only temporary as the vent valve fault will persist until it is fixed.

DO YOU TOP OFF when you fuel up?

Few extra ounce of gasoline inside the EVAP system can cause hot restart problem.

EVAP system is design to slow vent out vapour only.

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Locate the charcoal canister near the front bumper and remove the plastic hose.

Let the gasoline vapour vent out door for 3-5 hours (more if possible) and re-attach hose.

You any need a short burst of starting fluid to restart.

DO NOT OVER FILL or TOP OFF GAS TANK.


Please rate my answer if it works out for you.

Thanks

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