1973 911 era question

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

C McFaul - 11 Mar 2004 19:27 GMT

What's the black filter looking thing in the left front trunk of my 911? I
have a constant gas smell and am trying to pin point where it is comming from.
The hoses leading to the fore mentioned mystery drum are very soft. Is this a
mission critical component that should have the hoses replaced or could /
should it be eliminated?

Many Thanks

Chris
73 911 E
Jack of all trades, master of few

Reply to this Message

Nate Nagel - 12 Mar 2004 00:32 GMT

> What's the black filter looking thing in the left front trunk of my 911? I
> have a constant gas smell and am trying to pin point where it is comming from.
[quoted text clipped - 7 lines]
> 73 911 E
> Jack of all trades, master of few

sounds like a charcoal canister for evap emissions to me although I
don't know my 911s very well. I'd just replace the hoses and keep going
unless you have some other reason for wanting to eliminate it.

nate

Signature

go dry to reply.
http://www.toad.net/~njnagel

Reply to this Message

Tom Tweed - 12 Mar 2004 14:54 GMT

>sounds like a charcoal canister for evap emissions to me although I
>don't know my 911s very well. I'd just replace the hoses and keep going
>unless you have some other reason for wanting to eliminate it.

It is part of the fuel tank venting system. Beside the hoses,
remove the cannister itself and pressure test it. It is often
cracked and allows fuel vapor to escape into the cockpit. I have
seen them repaired by fusing the crack with a soldering iron,
although simply replacing it with a checkvalve is possible, if
you don't have to meet smog regs.

TT
---------------------------------
Tom Tweed mailto:tweedt@ucsd.edu
La Jolla, CA, USA or ttweed@san.rr.com
http://members.rennlist.com/tweedt/
---------------------------------

Reply to this Message