Fuel Vapor Canister Upside Down?!!
#21
![Default](/forum/images/icons/icon1.gif)
yeahh, is there such a tool as a sniffer for gasoline vapor? (there is one for refrigerant gas).
if the vapor is only in the cabin, the source must be in the cabin.
I know there is a fuel line that enters the cabin from the trunk, it is behind the rear seat Back, passenger side, then it travels to the front under the door threshholds.
To see this foam-covered line, the rear seat and back must be removed. To follow it, the aluminum door threshholds must be removed too.
if the vapor is only in the cabin, the source must be in the cabin.
I know there is a fuel line that enters the cabin from the trunk, it is behind the rear seat Back, passenger side, then it travels to the front under the door threshholds.
To see this foam-covered line, the rear seat and back must be removed. To follow it, the aluminum door threshholds must be removed too.
Thanks!! I will take a look at that in the morning. I just had those out recently, so I know where to look. Thanks again!!
The following users liked this post:
Greg in France (08-03-2024)
#22
![Default](/forum/images/icons/icon1.gif)
It could be any fuel pipe that is in the cabin, I do not know where they run on your model, but I was referring to the fact that every fuel tank in a car has some sort of overflow drain, and if these are routed through the cabin/near the cabin, they are a likely source of fuel smells at a full tank.
Part 17 in this diagram:
https://parts.jaguarlandroverclassic.../brand/jaguar/
Part 17 in this diagram:
https://parts.jaguarlandroverclassic.../brand/jaguar/
Last edited by Greg in France; 08-03-2024 at 02:29 AM.
#23
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,884
Received 10,941 Likes
on
7,188 Posts
![Default](/forum/images/icons/icon1.gif)
It could be any fuel pipe that is in the cabin, I do not know where they run on your model, but I was referring to the fact that every fuel tank in a car has some sort of overflow drain, and if these are routed through the cabin/near the cabin, they are a likely source of fuel smells at a full tank.
Part 17 in this diagram:
https://parts.jaguarlandroverclassic.../brand/jaguar/
Part 17 in this diagram:
https://parts.jaguarlandroverclassic.../brand/jaguar/
On the Series III the vapor pipes run under the rear parcel shelf and then upwards into the C-pillars. Any small leak in this system could easily migrate into the cabin. Really, the little cannisters in the C-pillars are virtually inside the cabin.
![](https://parts.jaguarlandroverclassic.com/catalogue/xj6-ser-3-to-aug-1985/fuel-exhaust-and-emissions/files/mobile/53.jpg)
Cheers
DD
The following 2 users liked this post by Doug:
Childeric12 (08-03-2024),
Greg in France (08-03-2024)
#24
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,884
Received 10,941 Likes
on
7,188 Posts
![Default](/forum/images/icons/icon1.gif)
Fuel odors travel in mysterious ways.
Dried-out gas cap seals are often over looked as a possible culprit but vapor leaks here can be drawn into the cabin. I don't really understand how but it happens.
At the front of the cylinder head is a 2" long section of fuel hose that often leaks. It seldom gets replaced, might be worth checking.
The underbody feed and return pipes can leak as well. This is not common but, if they're rusty, it is possible.
![](https://parts.jaguarlandroverclassic.com/catalogue/xj6-ser-3-to-aug-1985/fuel-exhaust-and-emissions/files/mobile/17.jpg)
And, as always, remember that it doesn't have to be a wet, drippy leak to cause a big smell. Just an oooze will do it.
Cheers
DD
The following 2 users liked this post by Doug:
Childeric12 (08-03-2024),
Greg in France (08-03-2024)
#25
Join Date: Mar 2008
Location: Pacific Northwest USA
Posts: 24,884
Received 10,941 Likes
on
7,188 Posts
![Default](/forum/images/icons/icon1.gif)
Cheers
DD
#26
The following users liked this post:
Greg in France (08-03-2024)
#27
![Default](/forum/images/icons/icon1.gif)
FOUND IT!!!! The valves behind the rear tires were bad. When driving on the right tank, fuel was being returned to the left tank. Happily, I have two new ones that I can install. BTW someone said something about a "sock" going on the end of these valves in the tank. Anyone know what that is? Thanks again everyone!!
The following users liked this post:
slofut (08-03-2024)
#28
Join Date: Jun 2012
Location: SW Ga. Home of grits and gnats!
Posts: 556
Received 144 Likes
on
104 Posts
![Default](/forum/images/icons/icon1.gif)
The sock is on the ends of the main pickup tube in the pickup sump, not on the return tubes in each tank. Socks are accessible by removing the large brass plug with the drain plug in it, bottom of the sock is then visible. Takes some work to get them out with needlenose pliers etc sometimes as they can be stuck to the pickup tube pretty good.
#29
Join Date: Jun 2012
Location: SW Ga. Home of grits and gnats!
Posts: 556
Received 144 Likes
on
104 Posts
![Default](/forum/images/icons/icon1.gif)
FOUND IT!!!! The valves behind the rear tires were bad. When driving on the right tank, fuel was being returned to the left tank. Happily, I have two new ones that I can install. BTW someone said something about a "sock" going on the end of these valves in the tank. Anyone know what that is? Thanks again everyone!!
BTW... for those evap hoses be sure to use hose rated for fuel vapor.
Last edited by slofut; 08-03-2024 at 08:35 PM.
Thread
Thread Starter
Forum
Replies
Last Post
SineMetu
XJ6 & XJ12 Series I, II & III
5
05-19-2021 03:10 AM
magnetron
XJ6 & XJ12 Series I, II & III
24
09-17-2020 08:01 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)