Skip the auto shop - Our mechanics make house calls

Q: Filled up this morning, after driving about 20 miles in the heat, strong gas smell inside and outside of the van. No visible leaks

asked by on

Seems to only happen on hot days. Gas smell is extremely strong. Opened gas cap and it sounds like the gas is boiling, although it may be air/vapor escaping?

My car has 130000 miles.
My car has an automatic transmission.

Be careful of using some fuel additives. From my experience I’ve found some additives that will cause the fuel to boil in the heat. Also, depending on where you got your fuel, you may have got a "winter blend" of fuel which can be more volatile than a summer blend. These fuels ignite better in winter but will be too volatile in the summer. The sound you may be hearing could be winter fuel boiling when it gets hot. Your fuel may have a strong gas smell when you fill up on gas and you have your door or window open as fumes can get into your car or van. However, I would also check and make sure your fuel vapor valve is not leaking.

I recommend getting the vehicle looked at by a qualified technician. They will be able to diagnose the smell you’re experiencing and make the necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • Filled up this morning, after driving about 20 miles in the heat, strong gas smell inside and outside of the van. No visible leaks

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How long should it take a mechanic to replace the a/c compressor on my 06 E 150 4.6

The a/c compressor replacement will not be the only component that will need to be replaced at the same time. The replacement of the compressor is about 1.5 hours and does not include the recover or evacuate and recharge of...

Q: Passenger side rear mirror and gas cap

Hello, thanks for writing in. I would recommend buying a replacement gas cap from factory Ford as these are typically engineered much better than many of the aftermarket companies. Regarding your Check Engine Light, you should have this checked at...

Q: Could I have a water pump problem?

You may have a leaking heater hose or heater core. You will need to have the cooling system filled and then the system pressure tested to locate the leaking in the rear of the motor area. Do not drive vehicle...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.