Fuel question...

"RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars" (rallydarkstrike) 01/22/2020 at 13:00 • Filed to: Gas small

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Hi all!

Question for those in the know...I’ve noticed in the last month or so that I sometimes smell gas around my car. Not overly strong but it’s there. I seem to notice it more (or maybe it’s just me) when the tank is 1/2 filled to fully filled.

Hoping this doesn’t mean there is a hole in my tank somewhere...it’s been very chilly here lately, so hoping it’s just something clogged frozen somewhere that will melt and then stop again.....anybody have thoughts on what it could be?

Cheers and thanks!

Sovande > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:07

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How old is the car? Could it be something as simple as a bad fuel cap gasket? Leaking fuel line at the injectors? Leaking injectors? Leaking fuel filter? 

Highlander-Datsuns are Forever > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:07

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The last time I smelled gas around my car it had a loose fuel line under the hood. I would at least do a through inspection. 

E90M3 > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:07

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Define very chilly. G asoline has a very low freezing point; it all depends on exact composition so safe to assume it’s bellow -30 C. For reference octane freezes at -57C.

Cé hé sin > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:11

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I get that in warm weather. It’s the fuel cap seal, or lack of sealing in this case. Not in the cold though.

facw > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:11

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Last year I smelled gas in the garage when I was visiting my parents. Next time I was there it was basically pouring out from the seriously rusted fuel filter on my dad’s wagon.

Longtime Lurker > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:26

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Front or back of the car? We were getting a strong fuel smell in the engine bay from my dad’s venture when it got cold, turns out the fuel pressure regulator was leaking.

3point8isgreat > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:31

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My Magnum had this when the EVAP system went bad.  Valve on the tank gets stuck open or something.

Future next gen S2000 owner > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:40

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Try to find the leak with a lighter. That’ll definitely work.......

Ash78, voting early and often > 3point8isgreat 01/22/2020 at 13:50

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I was gonna say something like a clogged EVAP canister. I believe if there’s enough pressure, it just vents straight into the air. Hopefully not a high enough concentration to ignite, just to smell bad.

DipodomysDeserti > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 13:54

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It’s not a bimmer by any chance? The in tank fuel pumps both dissolved on my wife’s X1, along with the filler hose, causing these exact symptoms.

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Sovande 01/22/2020 at 14:38

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2009 Hyundai Accent - I don’t see any obvious gas on the ground that leaked out, but it’s been a bit wet, so hard to tell. Smell seems to be towards the side-rear of the car. Not strong , just noticeable.

Old Red Wagon > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 14:39

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I had this issue on my E30. Turns out I had a very small pin sized hole on the feed line going to the fuel pressure regulator. Swapped the line out and all was well. I also had a Mustang that had a bit of a fuel smell to it also, turns out the fuel rail was leaking a bit and needed to be swapped out. Could be a number of things honestly, will all come down to troubleshooting. 

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Highlander-Datsuns are Forever 01/22/2020 at 14:44

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Could be the line, but I don’t SEE any leaks anywhere? Smell is coming from near the side-rear. I notice it as I get in. Don't think it's coming from the engine bay as I don't seem to smell it there!

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > E90M3 01/22/2020 at 14:46

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Pretty warm compared to that. Not too bad today, but -20C or so for a day or two (with windchill).

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Cé hé sin 01/22/2020 at 14:49

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It seems to not be quite as bad when the tank is more empty...COULD be the cap seal perhaps? I actually opened the fuel door and took a big whiff and it didn’t smell like it was coming from the cap...not noticeably stronger there?

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > facw 01/22/2020 at 14:53

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This is on an outside driveway, so hard to see leaks, but I don’t see any under the car!

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Longtime Lurker 01/22/2020 at 14:55

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Side-rear. I notice it as I get into the car. Don’t really notice it at a ll from the front of the car or under the hood.

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Ash78, voting early and often 01/22/2020 at 16:24

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And it’s not even that noticeable, it’s like somewhere in between a faint whiff of gasoline and a light smell of it.

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > DipodomysDeserti 01/22/2020 at 16:26

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Nope, 2009 Hyundai Accent hatch!

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Future next gen S2000 owner 01/22/2020 at 16:29

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OR, not? :P

Ma ybe I’ll just get the garage to have a glance at it when it is in for its oil change on Monday! :P

Longtime Lurker > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/22/2020 at 18:47

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Looking at the parts diagram the fuels appear to run on the left side. On the right side other then the tank, your evap system look to be on the right.

https://www.wholesalehyundaiparts.com/showAssembly.aspx?ukey_assembly=1108897&ukey_make=1202&ukey_model=19441&modelYear=2009&ukey_category=26759  I couldn't remember the exact of your car but this should be close enough.

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > Longtime Lurker 01/22/2020 at 19:31

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Yup, I have a service manual! Fuel door is on the left-rear quarter on the driver’s side.

pip bip - choose Corrour > RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars 01/23/2020 at 04:31

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look around the engine bay?

front or rear is it more noticeable?

if rear maybe fuel cap?

RallyDarkstrike - Fan of 2-cyl FIATs, Eastern Bloc & Kei cars > pip bip - choose Corrour 01/23/2020 at 10:03

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No smell in the engine bay at all. Smell is mostly on the side. I’ve not checked from the passenger side, but notice it when getting in from the drivers side (the fuel filler is in that side). Not strong but just noticeable.

99% sure it’s not the fuel cap as I’ve opened the fuel door and taken a strong sniff right next to it and it doesn’t noticeably smell like fuel any more than you'd find with any car.