Skip the auto shop - Our mechanics make house calls

What Prevents the Fuel System From Leaking?

fuel leak

Leaking fuel is a hazardous and wasteful problem for a vehicle to have. Manufacturers know this, and to combat the problem they have implemented a number of simple ways to prevent fuel from leaking out of the fuel system:

  • O-rings: Small rings made out of rubber or similar flexible material. They are extremely useful at preventing liquid from leaking out of lines, hoses, and fittings. In the fuel system, O-rings are used to keep fuel from leaking around the fuel injectors.

  • Gaskets: Rubber seals that precisely match the outline of the part they are applied to. For instance, the gasket between the fuel tank and fuel pump prevents leaks because it is made to seal off the perimeter of the hole in the gas tank that the pump mounts to.

  • Hard gas lines: Much more durable than rubber hoses, hard fuel lines are used on many cars because they last a long period of time and they can withstand the abuse of being under a moving car all the time. Rubber hoses are used in the fuel system as well, but they are in accessible areas where they can be regularly inspected.

Despite all of this, gas leaks do happen. Gas is dangerous as a liquid and it produces dangerous fumes as well. A leak must be fixed as soon as it is noticed.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
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...
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...


Related questions

Q: The car starts only with Easy Spray

Hi there. Thanks for writing in about your 2010 Ford Transit Connect. It sounds like there may not be a crank signal occurring at the normal cranking speed. If there is not, then the engine will not start. If adding...

Q: Fuel Pump Malfunction

In October 2016, BMW announced a recall covering fuel pumps for certain models produced during model years 2007-2012. Your vehicle appears to be outside the scope of this recall but nevertheless it would be a good due diligence to contact...

Q: Coolant tank leak

Hello. If the coolant is leaking that fast then you should be able to see the vehicle leaving a puddle on the ground. If it is leaking onto the ground then it can be from a number of places. If...