So intereating situation chaps. I replaced my fuel pumps recently due to a dead secondary. Job was a bit fiddly but straight forward. I removed the fuel lines above the diff so no kinking. I did not replace my evap flange gasket as mine was seemingly in good condition.

Situation
1. No smell in cabin with windows up and hvac on.
2. Smell in cabin with windows down or sunroof open.
3. Smell in trunk after using car, no smell accumulating when off.
4. I have gone over everythinf and made sure its all connected.
5. No check engine lights or codes.
6. No leaks under the car at all. Bone dry

Im at a bit of a loss here. The smell is worse by the filler neck area but all the lines there are connected.

Ive opened the fuel filler door and no smell there, even right after shutting it off.

Should i be replacing the evap flange gasket and filler cap?

Any advice would be helpful.

Thank you.

 

Start from the evap gasket. Does it leak when you fill it to the brim? Is the smell then worse ?

 

You’ll need to run the engine, pull the trunk carpeting and check for a strong fuel smell and if no luck, Jack the backend of the car up and check the fuel lines at the tank. It has to be something you touched. Did you mess with the fuel filter at all?

 

I have done exactly that and the fuel smell is closest to the area of the filler neck.

I replaced the filter but everything under the car is completely dry. I used new filter o rings and closely inspected the whole area. No signs of a leak.

I have to assume its either the cap is toast (i did drop it by mistake but saw no damage) or the evap flange seal.

 

I would probably start with the cap and proceed from there. Fuel fumes are difficult to
track down because they dissipate in such a wide area,

 

Well took it all apart, received a slighter thicker seal (3mm vs 2.75) for the evap flange, paid very close attention on reassembly and the problem seems to be fixed. Not sure what the issue was but im glad its fixed.

On a side note, i can now do a fuel pump job in about 3 hours