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Help Needed - Fuel Filler Valve Issue... not like other posts..


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Posted

Hi all,  So the saga of the 51,000 mile GT3 continues... after I get everything running I started getting a CEL for evap leak (small) pretty much every time I drove the car after a reset.  I do the requisite research and all points to the EVAP valve on the filler neck.  I even checked the valve that is over by the throttle body first and that actuated perfectly with 12V so back to the filler evap valve.  Replaced it per Pelican parts video and it threw a slightly different code (Fuel tank something or other, but not the evep leak (small) on startup but cleared and hasn't returned.  Sooooo THEN I go to fill up the car and it won't take more than about a quart before spitting fuel out and cutting off the nozzle.  Never had that issue with the car...After a 20 minute / 500 click fill-up, no CEL or anything but I found the troubleshooting step about the filler flap and unlike my 996TTs, there is no click.  The E6 fuse is intact.  so based on both symptoms, it appears the original valve was stuck in the open position and that the new one is stuck in the closed position, pointing to an issue with the car electrics, rather than the valve, I would guess, since there is no activity when pushing in the filler flap... any help is greatly appreciated as I am fresh out of ideas...

Posted

Okay, it is fixed now.  by way of researching the vent valve (behind the passenger side headlamp) I stumbled across a forum post where someone was in the same spot- replaced Filler Vent Valve and wouldn't refuel... found out that I had not replaced the magnetic "reed switch" in the channel on the valve assembly, thus it couldn't open.  The Pelican Parts DIY video omitted that portion so I had no idea what it was as it falls out when removing the old valve assembly.  Hope this helps the next poor bastard trying to troubleshoot this issue.  As these 996s continue to age, I feel like these plastic parts will start failing at a higher rate even n low mileage vehicles.  Cheers all!

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