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  #1  
Old 11-15-2004, 04:17 PM
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Join Date: Nov 2004
Posts: 79
Help! Strong fuel smell from '86 300E when warm!

This just started happening....
When the car is parked after being driven, there is a strong gasoline smell that comes from under the hood. It's so bad that I had to park the car outside our garage to keep the vapors from getting inside the house.
I can occasionally smell the vapors when driving slowly, or when stopped at a light.
The smell mostly disappears after the engine cools completely, but reappears after it is run again.
There are no visible fuel drips.
What can I do to fix this problem?
Thanks!
Mika

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  #2  
Old 11-15-2004, 04:36 PM
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Location: York, PA
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Look at EHA and around the fuel regulator. Also check the charcoal cannister and vacuum lines and fuel lines that lead to it. Next check of course the fuel pumps. Most likely the little O rings on the EHA have gone bad and are leaking.
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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....
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  #3  
Old 11-15-2004, 05:07 PM
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Thanks very much for your feedback!
Where are the EHA and Charcoal canister and how do I get to them to inspect? Is this a DIY job, or should I take it to a mechanic?
Thanks,
Mika
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  #4  
Old 11-16-2004, 09:30 AM
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Location: York, PA
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The EHA is on the side of the fuel distributor! Under the Air Box. The Charcoal cannister I am not sure about on the 300 but on a 190 it is inside the drivers side fender. You need to remove the plastic fender liner to see it. Yours may actually be easy to get to under the hood somewhere. My 1986 190 has a metal cannister which the 300 may have as well.
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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....
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  #5  
Old 11-16-2004, 09:43 AM
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Location: Southeastern PA
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Mika, the EHA valve on our 1991 300CE developed a hairline crack which leaked gasoline and caused a strong gasoline smell under the hood. I suggest removing the air cleaner housing to expose the EHA valve then start the engine and closely inspect the EHA valve for evidence of leakage ... the black plastic will get wet, but probably not drip so you have to look very closely and/or wipe it with a paper towel. Replacing the two green O-rings did not solve my problem. Needed a new EHA valve.
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  #6  
Old 11-16-2004, 01:32 PM
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Posts: 79
Thanks for all the replies!
Just to clarify for me... if I remove the oval metal tub that the air filter sits in, I should be able to see this EHA valve? Is it Ok to run the engine with this tub off?
Thanks,
Mika
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  #7  
Old 11-16-2004, 02:15 PM
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yal yal is offline
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Short answer is Yes.

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