There are a multitude of vitally important components that work together to keep your Audi performing at its best. Even the smallest pieces are crucial to its optimal operation. This includes the fuel cap. Often overlooked, the fuel cap may seem insignificant when tuning up a vehicle or trying to diagnosis a problem. However, this seemingly simple component can cause real issues when it is loose or defective. Let’s take a look at fuel cap issues in the article below.
What is the fuel cap?
The fuel cap, also known as the fuel filter cap, seals the opening to the gas tank in your Audi. The cap prevents things like debris, dirt, and dust from entering the gas tank. It also serves as a seal to help aid in the prevention of vapors from the fuel being released into the air and even into the vehicle itself.
There are warning signs that advise you of a potential problem with your fuel cap. A lingering smell of fuel can signal a loose, cracked, or missing cap. Another obvious sign of an issue is when you do not hear a clicking sound when tightening the cap after refueling. Fuel caps are designed to click a couple times as you turn them to signal proper sealing. If those sounds are missing or the cap quickly pops out after turning, it could mean that it is no longer fitting adequately. This problem should be addressed as soon as possible to prevent further damage or more severe malfunctions within the car’s operating system.
Issues Caused By a Loose or Defective Fuel Cap
Evaporating fuel vapors can leak into the air
These leaks can allow hazardous fumes to mix in the atmosphere, causing smog and other types of pollution. In addition, such leaks can also be dangerous for you as the driver and for your passengers. Fuel vapors are extremely flammable and in certain conditions can start a fire while driving your Audi.
Check engine light may illuminate
In the majority of modern automobiles, the check engine light will be triggered if the fuel cap is loose or malfunctioning. The cap is included in the overall emissions systems of a vehicle, so when there is an issue, the sensors are alerted. This line of events can cause even more significant problems with the vehicle. Surprisingly, a check engine light is commonly the result of a faulty fuel cap.
Decrease in gas mileage
When the fuel tank is not properly sealed by the cap, large amounts of fuel vapors will escape. This will decrease the overall fuel supply more rapidly than normal causing a loss in gas mileage. In fact, this loss could average almost 30 gallons annually.
How does a fuel cap become loose?
The fuel filter cap in your Audi can become loose for several reasons. Most commonly, the loosening is a result of the repeated removal and tightening during fueling. Over time, normal wear and tear can lead to an improper fit. It can also affect the cap gasket responsible for proper sealing of the tank. This gasket can be broken or cracked as a result of repeated use. Preventing issues related to the fuel cap includes listening for the clicks when tightening to ensure a proper closure. Regular inspections of the cap and gasket should be done to check for rips, tears, or breakdown.
Address Audi Fuel Cap Issues with Revolution Automotive Services
Whether you are in need of regularly-scheduled maintenance or diagnosis and repair of fuel cap issues in your Audi, Revolution Automotive Services can help. Revolution is ready and able to help residents in Norwood, Westwood, Walpole, Sharon, Canton, Metfield, Needham, Dover and Boston, MA.
We are the only independent repair shop that uses specific diagnostic equipment to work exclusively on exotic models, including Audi. Our ASE Certified Master technicians can inspect, repair, or replace your faulty fuel cap and ensure that your car is running at peak performance. We go above and beyond for our customers. Your patronage, overall satisfaction, and referrals are crucial to our continued success. You can always feel confident when trusting Revolution Automotive Services with the maintenance and repair of your Audi.