Q: 2014 Toyota Corolla Fuel Odor

asked by on

On my 2014 Corolla (40k miles), I am getting a very faint fuel odor around the fuel filler door. There is no check engine light on. I have already replaced the gas cap with a new OEM one from Toyota, but I'm still getting the faint fuel smell. I also notice that when tightening the cap, it clicks, but then bounces back a bit. Both the old and new caps do this. What is the likelihood of two defective fuel caps? Is this most likely a problem with the fuel filler neck or something else? The fuel odor is very faint, but I know it's supposed to be a sealed system.

Any thoughts you might have would be appreciated.

Thanks,

David

My car has 40000 miles.
My car has an automatic transmission.

This may be related to the fuel tank purging system. As you may know, all modern cars are equipped with an Evaporative Emission Control (EVAP) system. The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP system collects and temporarily stores the fuel vapors in the charcoal canister. The charcoal canister is filled with activated carbon pellets that can absorb the fuel vapors. When the engine is running, the fuel vapors are purged from the canister and burned in the engine. The vent control valve (solenoid) controls the flow of outside air in and out of the charcoal canister. When this solenoid is not working properly, this will cause excess pressure to back up into the tank resulting in the fuel cap being the path of least resistance. This may be what is causing it to back out on you. If you would like to have an expert check this out, a certified technician from YourMechanic can come to your car’s location to inspect the fuel system for you and advising on a repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 2014 Toyota Corolla Fuel Odor

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: About to buy a 2014 / 60K mini countryman s - What are average annual repair costs?

Unfortunately repair costs can vary significantly based on not just the vehicle but also the location that you live in. The parts can be quite expensive for these vehicles as many parts are manufactured by BMW. Also depending on how...

Q: a Chevy Cruze 2011 and when I stop at a red like or when the areis not moving and I get ready to accelerate its hesitation

Hi Nawaza. Thanks for contacting us today. The Chevrolet Cruze isn't well known for its acceleration ability. However, this could be a sign of a rather signification fuel system obstruction or even transmission problems. I would recommend having a professional...

Q: Will the Check Engine Light turn off by itself or do I need to manually turn it off after I fix the problem?

The computer will run self tests as the vehicle is turned on, and while the vehicle is driving. There are certain circumstances for each test that must be met for the computer to turn off the check engine light. The...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...