I’ve looked through the manual and online for months and haven’t been able to find any photos, anyone selling, or any information on a vapor vent valve exact location or fuel check valve? I have a super strong smell of fuel near my carbon canister and my fuel pressure drops off after I turn my 300zx off so I’m trying to replace the fuel vent valve, check valve, purge valve, etc.
On the fuel filler side of the car the valve tucked up and hidden by the plastic stone guard that covers the hard lines. The guard is held in place by 3 screws and a nut. it starts midway up the car as a very long piece.
You may be aware of this already, but check also the two flexible fuel lines just below the battery tray. Some people are unaware they are there and account for fuel vapours / leaks which quickly dissipate with the heat.