Started smelling gas in my car after changing out the old vent valve solenoid in the rear. So then I replaced the charcoal canister, thinking that would fix it . No , when my car is sitting still I’m still getting gas in the cabin through the vents . So I pop the hood and notice my fuel damper is very dirty on the outside . I’m wondering if it could be that or possibly the purge valve .. has anyone else dealt with this?
07’ Infiniti g35 Sport Sedan

 

Would be nice to know WHAT you drive..

 

07’ Infiniti g35 Sport Sedan

 

I never had such issue in my 07. But you do have to make sure all your evap lines are good. They do get brittle and crack overtime. This valve could be cracked and/or leaking at the valve under the cap. Do you get any codes for EVAP system?
If the solenoid is not working right, it will throw a code.

The fuel damper has an o-ring inside but you would see oily substance all over it if it was leaking and gasoline leaves stains when dries up.

 

Yes it had an oily substance on the damper. Think that’s where the smell is coming from ? It was throwing code for vent valve solenoid, changed that . Then changed the charcoal canister bc I just assumed that was causing the smell . Had no luck with either , still smell gas .

 

If your fuel damper don't look like mine (dry) then pop it off and replace the o-ring. Also check the hose going to it, could be leaking at the crimped connection..

 

My fuel damper doesn’t look like what you circled , it looks like this ;


the O was covered in what looks like fuel , light brown color

 

What i circled above was EVAP valve..

 

lol sorry I’m not familiar with the EVAP system AT ALL, hint as to why I’m in here asking 😜

 

Here, grab a service manual and dive in.

 

this little guy has a rubber o-ring (under that "condom" looking thing in your picture) that could've failed. clean it up real good and then start it first thing in the morning, then go and look and see if it's leaking any fuel. pretty common for these (o-rings) to fail.

 

Ok thank you I’ll do that today and see if it occurs again .

 

The FPR (fuel press reg) is inside the 'fuel module' meaning part of the fuel pump assembly inside the fuel tank. Pop the cover under rear passenger seat and you'll see the pump. That would not cause any fuel vapors to enter the cabin unless the fuel tank cover holes have blown seals which would leak fuel outside the fuel tank and/or body covers not sealing properly (covers under the seat).