1988 420SEL gas smell - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 03-22-2013, 10:46 AM Thread Starter
BenzWorld Newbie
Date registered: Dec 2012
Posts: 1
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
1988 420SEL gas smell

First I want to say thank you to everyone on this forum for all the answers I have been able to dig up to solve every issue with my Benz. I have enjoyed learning about, working on, and fixing the problems which have arisen (not many, just annoying)over the last few years.

Ok, I have a 1988 MB 420SEL with 151,000 miles. It runs wonderfully well (burns about 1qt of oil every 1000 miles though... is that normal?), starts instantly, but I have a few issues which still need to be resolved and I would enjoy trying to fix them myself. So, if anyone has any advice, I would sincerely appreciate it.

Problem number 1... About 2 months ago when I was driving and came to a stop sign, I noticed the smell of gasoline through the heater vents. The smell is not a continuous problem, but occurs occasionally when I stop and go and turn corners. There is no fuel leak visible anywhere. When I go to a store and park the car, I can smell gas fumes outside the car also (again occasionally, not consistently). If the vents are turned off, there is no gasoline smell whatsoever.

I have read that the problem may be the fuel cap and/or the EHA Valve o-rings. Could it be anything else that anyone has experienced with a similar situation?

Problem number 2... No matter which vent button I push on the HVAC controls on the dashboard, the air flow always comes through the front facing and/or upper vents only. The floor vents never engage and do not flow, nor is there any heat coming through the rear vents between the seats, just cold air. Any ideas?

I would appreciate ideas, and/or feedback, and thank you in advance.

Equisse is offline  
Sponsored Links

  Mercedes-Benz Forum > General Mercedes-Benz Forums > General Mercedes-Benz

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Title goes here

video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome