Metal Guru

Last weekend I replaced my fuel tank filler neck to remedy a fume smell in my trunk.
I'm still getting fumes
I removed the expansion tank and checked all the vent hoses. All were tight.
Checked the sender. It was tight as well.
Replaced the gas cap. No joy.
Smell is strongest at the filler and vent connection to the filler neck.
Anyone have any suggestions?
Thanks.

jimq

air out the carpet

Metal Guru

Yeah, did that first.
Maybe I'll wash it.

jgrosjean

I had the same thing. Replaced the filler neck but still smelled fumes for a long time, but it finally went away. Don't have any explanantion. Maybe it really was in the carpet.

wsybert

My smell was coming from a leaking fuel line at the pump. Tightened and fixed.
Bill

Metal Guru

Well, last night I got under the car and pulled the cover on the fuel pump. I got a look at the gasket for the in-tank filter too. All were dry
I'm going to try to borrow a HC sniffer and see if I can find the source that way.

MarkD

Gas cap is also a possibility... I thought I was going to need a replacement filler neck. Gas cap gasket was my odor source.

911addict

Check the full length of the fuel pipes. I had a dangerous leak!

Marc Shaw

I replaced the filler neck, gas cap, and a leaking fuel return line. I also rented a carpet cleaner and scrubbed the carpets - smell is gone.

Marc

dutchcrunch

please see my new post. i will post pictures when the wife comes home with the camera

Metal Guru

At last, I found the source of the smell
The line under the vapor catch tank, running from the tank to the rollover valve had perished. After I replaced it, the smell disappeared.
This weekend I'll replace the other lines that run from the catch tank to the fuel tank.

911Jetta

from the 993 forum:
Gas smell in trunk fixed!

https://rennlist.com/forums/showthre...ferrerid=19642

...I tightened the hose clamp on the end of the hose under the expansion tank and the smell is gone!

porscheforfun

I have a smell like exhaust or fuel , kinda strong in the cab . Any tips 1990 911 carrera 2

Metal Guru

Tightening hoses is a stop gap measure at best. Our cars are getting old enough that the rubber lines lose their elasticity due to the constant attack of the fuel, becoming flaccid and not sealing against the male barbs on the various fittings.
To anyone having this issue I would advise them to replace all of the vapor lines before replacing the filler pipe.

xeps

Becoming flaccid due to age - always bad.