Skip the auto shop - Our mechanics make house calls

Q: What Prevents Gas From Leaking?

asked by on

What prevents gas from leaking?

There are several components of the fuel system that have been designed to prevent gas from leaking during the fuel delivery process. The fuel tank is made of hardened plastic called polyethylene. These tanks are tightly sealed and designed to prevent leaks for an extended period of time. However, fuel tank leaks are possible and most often happen as a result of corrosion or damage to the fuel tank. The fuel lines are made of hardened plastic or a strong rubber material. Rubber lines are less likely to break and thus are more effective in preventing gas leaks. Rubber seals for the fuel injector, fuel rail, and the fuel pressure regulator are designed to withstand the high pressure of the fuel from the fuel injector and the corrosive properties of the gas to prevent gas leaks. Over time, these rubber seals may wear or break and gas leaks happen when fuel escapes these seals. Gas leaks are extremely dangerous because of how flammable gas is and should be addressed immediately, in the event of a leak in the fuel delivery system.

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!

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: Why truck will not go when cold

If you have had the fuel injection control module (FICM) replaced recently then you may have a bad FICM caused by repeated low voltage conditions causing the FICM to not produce the high 42 volts to open the injectors when...

Q: Car stalls out if I fill the tank all the way

Does the Check Engine light illuminate when the car stalls? If so, a mechanic will be able to trace the issue with a scan tool. That said, this concern is likely related to the On-board Refueling Vapor Recovery (ORVR) valve...

Q: transmission leak

Have you had your vehicle serviced lately? It is possible that your transmission was not filled properly leading to overfilling the transmission. As your vehicle reaches operating temperature, the fluid level can rise causing the extra transmission fluid to be...

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...