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Do you smell gas?

wd40

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Well, the other day when the temps were nudging 117, I fueled up early in the morning when the temperature was about 100. I never top off unless I am taking a long trip, so there was some breathing room in the tank after I was done. I did a few chores and put probably 40 miles on the car after refueling. Drove home, parked it in the garage and returned to the garage a few hours later, and was greeted with the overwhelming odor of fuel. Nauseous and overpowering, not just a slight smell. I did not find any threads that really addressed this problem and could find nothing on the Internet regarding this issue.

Made an appointment and took the vehicle into the local Hyundai dealer. The service writer told me they do get complaints on various models regarding this issue but they never find anything wrong. After about 2 ½ hours, I was told they ran a complete diagnostic on the vehicle and could find no issues. Some folks may say this is normal in high heat, but I disagree. I’ve had numerous vehicles over the past six years (company cars) GM, Ford and my other vehicle-a 4Runner and have never had this pungent very strong odor of gasoline during hot weather. The service writer wrote Hyundai customer service number on my copy of the work order ticket and recommended I call Hyundai.

Additional issues.

There has been quite a bit of conversation over excessive intake valve buildup on direct injection motors, so I asked the service writer how they were addressing the issue and how much it would cost the have the service completed. He told me he has never heard of the issue and was unaware of any problem and their dealership has never performed any maintenance on GDI engines for the valve buildup issue. I was certainly surprised they had not heard of this.

Finally, just a personal gripe about the service. I told the service writer I did not want my vehicle test driven after the diagnosis was completed. The service writer assured me the vehicle would not be driven and claimed they never test drive a vehicle unless it was a safety issue or a repair that would require a test drive to confirm the issue was resolved. The tech put four miles on my vehicle. Since the dealer did not have an R spec on the lot and claimed they rarely see them, I just wonder what kind of a hot rod trip was taken by the tech. He was messing with the radio too as the station was changed. This was very aggravating.

I called Hyundai Customer Support who is now checking the issue. We’ll see how it pans out.
 
For comparison, I live in Phoenix and am in the habit of filling my R-spec in the evening. I don't fill it full either and generally let the pump shut off by itself. It is about five miles from the gas station to my house where the car is parked in the garage.

I have never smelled a hint of gas after doing this and my garage is generally hotter than the hinges of hell in the evening.
 
For comparison, I live in Phoenix and am in the habit of filling my R-spec in the evening. I don't fill it full either and generally let the pump shut off by itself. It is about five miles from the gas station to my house where the car is parked in the garage.

I have never smelled a hint of gas after doing this and my garage is generally hotter than the hinges of hell in the evening.

I'm right with you. I follow your scenario exactly; however I sometimes fill up early in the morning and usually do some driving before I park it. Garage temp is like yours-Death Valley
 
dont know if this is valuable or not for the genesis, but my 2001 camry had a TSB on it regarding overfilling the fuel.
Apparently if you top completely off, the fuel will run into the charcoal canister filter. It was never intended for liquid to be in it, only vapor.
it would throw a check engine light, but would also give off gas vapors if parked in a garage as the filter dried out.
 
dont know if this is valuable or not for the genesis, but my 2001 camry had a TSB on it regarding overfilling the fuel.
Apparently if you top completely off, the fuel will run into the charcoal canister filter. It was never intended for liquid to be in it, only vapor.
it would throw a check engine light, but would also give off gas vapors if parked in a garage as the filter dried out.

I never top off and after I got fuel probably drove 40-50 miles that day before the car was garaged. thx
 
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This problem has been frequently discussed in older threads.

It still happens occasionally on my 2009. I no longer wait until the pump nozzle automatically shuts off, and instead I check the fuel gauge on the dash to estimate how much I can put in the tank and leave maybe 1-2 gallons short of full.

I think it happens under two circumstances:
  • Overfill of tank
  • Sudden movements of the car that sloshes fuel around and into some place that causes the fumes/odor, even when the tank is not topped-off or overfilled.
 
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