Filter for vented evap line?
11-04-2008, 06:26 PM
#1
On The Tree
Thread Starter
iTrader: (14)
Join Date: Jan 2005
Location: St. Louis, MO
Posts: 151
Likes: 0
Received 0 Likes
on
0 Posts
Filter for vented evap line? My fuel build consisted of duel intank walbro's, stock feed with the evap line as the return. Everything is working great, but after parking the car in the garage after driving, there is always a pretty strong fuel oder. Obviously the problem is from the evap line, which I have vented to atm after the charcoal box.
Is there something I can put on the end of the line to cut down on the oder? Maybe a small breather filter or something?
Thanks in advance
Chris
Is there something I can put on the end of the line to cut down on the oder? Maybe a small breather filter or something?
Thanks in advance
Chris
11-05-2008, 05:51 PM
#3
Moderator
iTrader: (11)
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,605
Likes: 0
Received 6 Likes
on
6 Posts
That's what the EVAP is for, it's a charcoal filter
cannister. Thing is, no absorbent / adsorbent can
take up stuff indefinitely, hence the whole purge
contraption.
A filter or breather is only going to keep crud out,
not keep vapor in.
Now oddly, I have had many non-smog vehicles and
only one ever stank badly of gas, I expect the rust
holes in the tank had something to do with that.
Might be that a vent tube with a very small orifice
would at least cut the vapor emissions.
I wonder how variation in the tank internal pressure,
pushes on delivered fuel pressure.
cannister. Thing is, no absorbent / adsorbent can
take up stuff indefinitely, hence the whole purge
contraption.
A filter or breather is only going to keep crud out,
not keep vapor in.
Now oddly, I have had many non-smog vehicles and
only one ever stank badly of gas, I expect the rust
holes in the tank had something to do with that.
Might be that a vent tube with a very small orifice
would at least cut the vapor emissions.
I wonder how variation in the tank internal pressure,
pushes on delivered fuel pressure.
11-08-2008, 08:54 PM
#4
Teching In
Join Date: Sep 2008
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Don't overlook the fuel lines, they could be the culprit for the fuel smell. I have the same problem currently because I have been using the Russell Proclassic fuel hoses which sweats out a lot of the raw fuel smell.
11-09-2008, 09:28 PM
#5
On The Tree
Thread Starter
iTrader: (14)
Join Date: Jan 2005
Location: St. Louis, MO
Posts: 151
Likes: 0
Received 0 Likes
on
0 Posts
I never thought of that, I just kinda assumed it was the open evap line, but I did all of the fuel work at the same time. I should probably plug it off when I park it to narrow it down, hell it could even be a leaky fitting...
