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Old 07-14-2019, 09:33 PM #1
m85476585 m85476585 is offline
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Really Strong Gasoline Smell

I was out on some trails yesterday, and I was having a problem with a really strong gasoline smell from my 4runner the whole time.

I first noticed it on some easy dirt roads about 30 minutes after leaving pavement (any 2WD car could make it). I was parked checking a map, and it smelled a little like gas in the car. After few minutes more driving I got out to see if I could find the source, and the smell was really strong. It mostly smelled near the gas filler area, and a bit behind the car. There was no smell under the hood, under the car, or from the tailpipe (with the car off). And turning the engine off didn't stop the smell. I tried opening and re-tightening the gas cap, but that didn't help.

I was at probably around 10,000 feet (and live at 5,000 feet) if it matters. Maybe the pressure in the gas tank was high relative to outside? But opening and closing the gas cap should have equalized it.

I had the check engine light for "very small evap leak" maybe a year ago, and I replaced the gas cap then. There were no check engine lights yesterday or today, and I went for a short drive today and didn't smell anything. I haven't noticed any leaks or unexpected loss of fuel.

Could my problem be similar to this thread?
Code P0456 - When its not the gas cap
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Old 07-14-2019, 09:39 PM #2
BigMike18 BigMike18 is offline
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Quote:
Originally Posted by m85476585 View Post
I was out on some trails yesterday, and I was having a problem with a really strong gasoline smell from my 4runner the whole time.

I first noticed it on some easy dirt roads about 30 minutes after leaving pavement (any 2WD car could make it). I was parked checking a map, and it smelled a little like gas in the car. After few minutes more driving I got out to see if I could find the source, and the smell was really strong. It mostly smelled near the gas filler area, and a bit behind the car. There was no smell under the hood, under the car, or from the tailpipe (with the car off). And turning the engine off didn't stop the smell. I tried opening and re-tightening the gas cap, but that didn't help.

I was at probably around 10,000 feet (and live at 5,000 feet) if it matters. Maybe the pressure in the gas tank was high relative to outside? But opening and closing the gas cap should have equalized it.

I had the check engine light for "very small evap leak" maybe a year ago, and I replaced the gas cap then. There were no check engine lights yesterday or today, and I went for a short drive today and didn't smell anything. I haven't noticed any leaks or unexpected loss of fuel.

Could my problem be similar to this thread?
Code P0456 - When its not the gas cap
If possible go check your Long Term Fuel Trims and Short Term Fuel Trims via a live read on a code reader and if they are pretty high like in the 20's on LTFT then it is probably a P0174 or P0171
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Old 07-14-2019, 09:55 PM #3
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I don't think it's coming from the exhaust. The smell is just as bad when the car is off.
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Old 07-14-2019, 10:51 PM #4
Mr.Edd Mr.Edd is offline
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Have u check the bottom of the fuel neck?
The fuel neck to the tank has a rubber gasket.
When it wears out the fumes come out.
Have u replace the fuel filter?
If u have check it. If u havenít it might need one.
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