Fuel smell outside the car not inside????
Thread Starter
Senior Member
Joined: May 2010
Posts: 376
Likes: 2
From: The Bay Area...Cali
05 E55 AMG
Fuel smell outside the car not inside????
So I searched and found that most of the people with the fuel leak issue have the smell on the inside of the car and find a fuel puddle under the rear seats. thats not the case with my car. I've noticed for the past 2 weeks my car a really strong fuel smell outside the car right in the engine bay. I've popped the hood open but never found anything and can't really pinpoint where the smell is but it's definetely coming from under the hood. Anyone have any insight????
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Porsche 991S, Cayenne S, 1972 BMW 3.0CS E9 Coupe
If it is an injector or part of the fuel rail, then you're covered under the emissions warranty if you're no longer under warranty.
Specified major emission control components are covered for the first 8 years or 80,000 miles of vehicle use. With a California vehicle, you may be entitled to additional warranty coverage.
Parts covered:
Fuel Metering System
electronic control module (unit) or EFI air flow meter, computer
command module or mixture control unit, deceleration controls,
electronic choke, fuel injectors, fuel injection units and fuel
altitude compensator sensor, bars or rails for EFI or TBI systems,
mixture settings on sealed fuel mixture control solenoid,
diaphragm or other systems, fuel metering components that achieve closed/other feedback control sensors/loop operation switches and valves.
Plus the Fuel Injection System and fuel distributor.
Specified major emission control components are covered for the first 8 years or 80,000 miles of vehicle use. With a California vehicle, you may be entitled to additional warranty coverage.
Parts covered:
Fuel Metering System
electronic control module (unit) or EFI air flow meter, computer
command module or mixture control unit, deceleration controls,
electronic choke, fuel injectors, fuel injection units and fuel
altitude compensator sensor, bars or rails for EFI or TBI systems,
mixture settings on sealed fuel mixture control solenoid,
diaphragm or other systems, fuel metering components that achieve closed/other feedback control sensors/loop operation switches and valves.
Plus the Fuel Injection System and fuel distributor.
Thread Starter
Senior Member
Joined: May 2010
Posts: 376
Likes: 2
From: The Bay Area...Cali
05 E55 AMG
Cool, thanks for the input guys
Thing is, I drove it home from work today pulled over checked for smells and got nothing, I swear this car has a mind of its' own.
Thing is, I drove it home from work today pulled over checked for smells and got nothing, I swear this car has a mind of its' own.
Senior Member
Joined: Jan 2011
Posts: 352
Likes: 1
E55 AMG
mine does this too. but only sometimes. and only does this in the morning first startup sitting in garage or drive way. real inconsistent. smell goes away after driving down the road and then never happens rest of day.
Senior Member
Joined: May 2008
Posts: 293
Likes: 20
From: Houston/Plano, TX
2005 E55, 2009 VW GLI
try and pull the codes off of your car using an odb reader. even if you dont have a check engine light, you probably have a pending code stored.
i had the exact same issue a while back and had several cannister vent shut valves and the evaporator purge valve replaced. the cannister valves got rid of the smell of gas underneath my car and the purge valve got rid of the smell of gas within the engine bay.
the smell of gas within the engine bay was only recognizable during cold starts.
a few months after replacing the purge valve, the gas smell was back within the engine bay. in the end, the dealer updated my ECU and things have been good since.
the code that kept coming up was p0456.
hope this helps,
Oscar
i had the exact same issue a while back and had several cannister vent shut valves and the evaporator purge valve replaced. the cannister valves got rid of the smell of gas underneath my car and the purge valve got rid of the smell of gas within the engine bay.
the smell of gas within the engine bay was only recognizable during cold starts.
a few months after replacing the purge valve, the gas smell was back within the engine bay. in the end, the dealer updated my ECU and things have been good since.
the code that kept coming up was p0456.
hope this helps,
Oscar
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Thread Starter
Senior Member
Joined: May 2010
Posts: 376
Likes: 2
From: The Bay Area...Cali
05 E55 AMG
try and pull the codes off of your car using an odb reader. even if you dont have a check engine light, you probably have a pending code stored.
i had the exact same issue a while back and had several cannister vent shut valves and the evaporator purge valve replaced. the cannister valves got rid of the smell of gas underneath my car and the purge valve got rid of the smell of gas within the engine bay.
the smell of gas within the engine bay was only recognizable during cold starts.
a few months after replacing the purge valve, the gas smell was back within the engine bay. in the end, the dealer updated my ECU and things have been good since.
the code that kept coming up was p0456.
hope this helps,
Oscar
i had the exact same issue a while back and had several cannister vent shut valves and the evaporator purge valve replaced. the cannister valves got rid of the smell of gas underneath my car and the purge valve got rid of the smell of gas within the engine bay.
the smell of gas within the engine bay was only recognizable during cold starts.
a few months after replacing the purge valve, the gas smell was back within the engine bay. in the end, the dealer updated my ECU and things have been good since.
the code that kept coming up was p0456.
hope this helps,
Oscar
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Junior Member
Joined: Mar 2013
Posts: 61
Likes: 0
From: sacramento,ca.
e55
its the oring on the fuel pressure damper.you can buy one at rockauto http://www.rockauto.com/catalog/more...792&cc=1432296
it's located on the fuel rail at the back passanger side of the motor by the firewall.pull off the air intake tube on the passanger side and you will see it.
mine only leaked gas on cold starts after the car sat overnight.
it's located on the fuel rail at the back passanger side of the motor by the firewall.pull off the air intake tube on the passanger side and you will see it.
mine only leaked gas on cold starts after the car sat overnight.
Senior Member
Joined: Nov 2013
Posts: 428
Likes: 11
05 E55 AMG
its the oring on the fuel pressure damper.you can buy one at rockauto http://www.rockauto.com/catalog/more...792&cc=1432296
it's located on the fuel rail at the back passanger side of the motor by the firewall.pull off the air intake tube on the passanger side and you will see it.
mine only leaked gas on cold starts after the car sat overnight.
it's located on the fuel rail at the back passanger side of the motor by the firewall.pull off the air intake tube on the passanger side and you will see it.
mine only leaked gas on cold starts after the car sat overnight.
Is this easily replaceable ?
Junior Member
Joined: Mar 2013
Posts: 61
Likes: 0
From: sacramento,ca.
e55
it's not hard to replace the part but the hard part is getting to it.i took all the air intake off from the grill to the throttle body.but you can do it by just unbolting the air cleaner covers and unclip the air intake "y" from the throttle body(just be careful not to break the clips on the "y".then lift the two covers and intake tubes out as one unit.you will be able to see the damper under the throttle body from the passanger side.use your thumb to push in on the damper while you use a pair of needle nose pliers to remove the retaining clip.then pull the damper out.it's a good idea to put an old towel under it to catch the little bit of fuel and also to catch the retainer clip just in case you drop it.also lube the new oring before you put the new damper in to keep from tearing the oring.
Newbie
Joined: Nov 2007
Posts: 9
Likes: 0
From: Colorado, USA.
03 E55 Kompressor
Same here, 03 E55 leaking fuel on transmission bell-housing passenger side, on cold starts only. Thanks for the info, love this forum. I was about to pull the rail, SC, etc. I will try replacing the O-ring without removing any of that first ;-) Every time something random breaks all I can think is... CTS-V? Literally something new weekly. Just past 100k, can't believe the amount of "plastic" or "band aid" engineering in this POS. ...The things one will tolerate for a measly 500 hp. :/ Next on the list: "machine gun locks" that started a few days ago, OMG this car is ****ty. But I love it so much.
Super Member
Joined: Jun 2007
Posts: 888
Likes: 4
From: Atlanta
'12 E63, E55(sold), C32 (sold), '65 Skylark GS 445 convertible, '12 ML350
Same here, 03 E55 leaking fuel on transmission bell-housing passenger side, on cold starts only. Thanks for the info, love this forum. I was about to pull the rail, SC, etc. I will try replacing the O-ring without removing any of that first ;-) Every time something random breaks all I can think is... CTS-V? Literally something new weekly. Just past 100k, can't believe the amount of "plastic" or "band aid" engineering in this POS. ...The things one will tolerate for a measly 500 hp. :/ Next on the list: "machine gun locks" that started a few days ago, OMG this car is ****ty. But I love it so much.
Small amount of lube shot down the lock post does the trick.
