Full tank gas smell, no leak
#1
Full tank gas smell, no leak
Costco fill ups are 4 miles from my garage. With that full of a tank you can smell it walking around the car. Half a gallon less and you smell nothing. No leak. I checked the gas cap, seems to seal fine. It's definitely coming from the back though. No smell under the hood at all. What do you think it is?
#3
#5
Super Member
Join Date: Jun 2021
Location: South Central Texas
Posts: 595
Received 148 Likes
on
122 Posts
2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
I knew I wasn't dreaming - I found the similar thread in here ... be sure to read thru from #1 on ... #3 has the possible issue and solution:
https://mbworld.org/forums/glk-class...ling-tank.html
https://mbworld.org/forums/glk-class...ling-tank.html
Last edited by calder-cay; 09-15-2023 at 08:42 AM.
The following 2 users liked this post by calder-cay:
GLKwanter (09-22-2023),
Roadrashed (09-15-2023)
The following users liked this post:
GLKwanter (09-22-2023)
#7
MBWorld Fanatic!
If it’s cracked seal it, I’m sure it’s plastic , research what will adhere. I’m sure there are a lot of YouTube videos on this .if using a silicone check expiration date , most any product , silicone for sure goes bad fast.
Last edited by Mmr1; 09-16-2023 at 04:46 AM.
Trending Topics
#8
MBWorld Fanatic!
Sort of off topic, but we had the same problem with a Jeep but it was made after Daimler sold off Chrysler. First just a vapor smell when filled, later it would actually drip on the floor under the tank.
It would surprise me if that plastic material wasn't hard to get sealers and such to stick to.
It would surprise me if that plastic material wasn't hard to get sealers and such to stick to.
#9
Newbie
Fuel Suction Assembly replacement
![](https://cimg3.ibsrv.net/gimg/www.mbworld.org-vbulletin/1120x2000/img_6850_45c4e4781f10c237709e2025bbd48e0810bc8bec.jpeg)
Back seat cushion and the two black covers need to be removed to have access to the fuel pump and the fuel suction unit.
![](https://cimg5.ibsrv.net/gimg/www.mbworld.org-vbulletin/1120x2000/img_6851_bbf947aacb62fdca4d1f315e70060bb29a296291.jpeg)
Gasoline puddle. No smell inside the car.
![](https://cimg7.ibsrv.net/gimg/www.mbworld.org-vbulletin/1120x2000/img_6852_2e2d954436052c126464d10d002ddff12d981267.jpeg)
![](https://cimg5.ibsrv.net/gimg/www.mbworld.org-vbulletin/1120x2000/img_6910_68e6f797d2af7c759194207596bec458007c358c.jpeg)
Fuel pump and suction pump, both need to be removed.
![](https://cimg7.ibsrv.net/gimg/www.mbworld.org-vbulletin/1120x2000/img_6866_976b08dc78dd30a4ade70c8cd4895e8f87ad4902.jpeg)
Plastic epoxy did not fix the leak. There were tiny cracks around tube where the fuel line connects.
![](https://cimg1.ibsrv.net/gimg/www.mbworld.org-vbulletin/1120x2000/img_6906_7215d113911aad0834e2c5d3c6f27f4f9c1e8941.jpeg)
The new Fuel Suction Pump Assembly from FCP Euro
![](https://cimg2.ibsrv.net/gimg/www.mbworld.org-vbulletin/1120x2000/img_6911_9032e03dc033719a8b1856ef38858e3abc1ab25a.jpeg)
The tool I purchased at Amazon. You need a long breaker bar or long ratchet.
![](https://cimg5.ibsrv.net/gimg/www.mbworld.org-vbulletin/2000x1124/img_6912_911fc707828059b5a449dfad945c4662e7b1400b.jpeg)
New unit in place.
This is what my wife’s 2013 GLK caused the fuel smell. It might help you troubleshoot yours. There’s a YouTube channel of a gentleman who shows more in detail the procedure of replacing the unit.
Senior Leigh. https://youtu.be/I-6rRazzeUY?si=XIpRE8VZUU-1oZ9u
I hope this helps you find your source of fuel smell.
Last edited by OnlyoneMB; 09-16-2023 at 01:05 PM.
The following 3 users liked this post by OnlyoneMB:
#11
Super Member
Join Date: Jun 2021
Location: South Central Texas
Posts: 595
Received 148 Likes
on
122 Posts
2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
So, @GLKwanter ... anything to report back with the gas smell ? Would be good to know.
#12
Out Of Control!!
![](https://staticssl.ibsrv.net/autocomm/Content/MB/mbwambassador2.gif)
Join Date: Sep 2018
Location: unbegrenzt
Posts: 13,399
Received 3,966 Likes
on
3,118 Posts
2017 GLE350 4MATIC
If the smell is not inside the car, but rather outside the car at the rear as indicated in the OP, check for failed purge system. Focus on the canister, typically located inside the rear quarter panel near the filler neck. Remove the wheel arch liner nearest the filler neck to inspect.
The following users liked this post:
calder-cay (09-22-2023)
#13
So, @GLKwanter ... anything to report back with the gas smell ? Would be good to know.
I freaking love this ride..
#14
If the smell is not inside the car, but rather outside the car at the rear as indicated in the OP, check for failed purge system. Focus on the canister, typically located inside the rear quarter panel near the filler neck. Remove the wheel arch liner nearest the filler neck to inspect.
The following users liked this post:
chassis (09-22-2023)
#15
This is what my wife’s 2013 GLK caused the fuel smell. It might help you troubleshoot yours. There’s a YouTube channel of a gentleman who shows more in detail the procedure of replacing the unit.
Senior Leigh. https://youtu.be/I-6rRazzeUY?si=XIpRE8VZUU-1oZ9u
I hope this helps you find your source of fuel smell.
The following users liked this post:
chassis (09-22-2023)
#16
Out Of Control!!
![](https://staticssl.ibsrv.net/autocomm/Content/MB/mbwambassador2.gif)
Join Date: Sep 2018
Location: unbegrenzt
Posts: 13,399
Received 3,966 Likes
on
3,118 Posts
2017 GLE350 4MATIC
Same with the carbon canister, if you go down that diagnostic path. Videos on yt are available for this and it looks straightforward. Wheel off, wheel arch liner partly off, then you can see the canister.
#17
Pulling up the seat is not a big deal. I watched Senior Leigh's video a few times and it looks straightforward. Simply do the job step by step.
Same with the carbon canister, if you go down that diagnostic path. Videos on yt are available for this and it looks straightforward. Wheel off, wheel arch liner partly off, then you can see the canister.
Same with the carbon canister, if you go down that diagnostic path. Videos on yt are available for this and it looks straightforward. Wheel off, wheel arch liner partly off, then you can see the canister.
The following users liked this post:
chassis (09-23-2023)
#18
Out Of Control!!
![](https://staticssl.ibsrv.net/autocomm/Content/MB/mbwambassador2.gif)
Join Date: Sep 2018
Location: unbegrenzt
Posts: 13,399
Received 3,966 Likes
on
3,118 Posts
2017 GLE350 4MATIC
Seems like you found it. Now for the next steps...
#19
Wouldn't be a bad idea to pack a fire extinguisher until you get it resolved.
#20
#22
$63 for the elcheapo fix from amazon (A2044700494 & 2114710179)
$63 for 3/4 of a tank of 91 octane at Costco
Garage not smelling like gasoline, priceless
She's perfect again!
$63 for 3/4 of a tank of 91 octane at Costco
Garage not smelling like gasoline, priceless
She's perfect again!
The following users liked this post:
OnlyoneMB (09-27-2023)
#23
Super Member
Join Date: Jun 2021
Location: South Central Texas
Posts: 595
Received 148 Likes
on
122 Posts
2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
@GLKwanter ... glad to read it was a fairly simple and inexpensive fix.
And also thanks for sharing the info and the results!!
And also thanks for sharing the info and the results!!