Q: Gas tank is leaking

asked by on

about 6 months ago I noticed my cars gas tank was building up pressure. One day the pressure finally built up too much and the gas tank started leaking gas. I took it to a local mechanic and they patched the hole and said the valve that releases the pressure in my tank had been stuck so they lubricated it. Well 6 months goes by and this morning I smelled gas and looked under my car and it was leaking gas again! it was a slow drip. I took the car back to the same repair shop as before and they say that the charcoal canister needs to be replaced because it is not releasing pressure which caused the my gas tank to leak again, in the same spot where the guy patched it before. I am skeptical that the charcoal canister is the real issue here. These people should have fixed it before but now I am having to deal with the same problem again. Please give me some advice. thank you.

My car has 335000 miles.
My car has an automatic transmission.

The tank is made of very sturdy stamped steel. It will withstand any conceivable vapor pressure that gasoline will create in a motor vehicle. If the tank is leaking, it leaks because it’s rusted out. It’s usually a waste of time to fiddle with gas tank repairs because if the tank is already rusty, while you repair one spot, another hole opens up months later. If the gas tank is leaking, it should be replaced with a new gas tank and the steel tubing should be replaced as well because it is probably nearly rusted through. At the same time, all the components of the EVAP system, including the gas cap, should be tested to be sure everything is functioning correctly. If you desire an inspection of the fuel leak, and replacement of the tank as needed, by a certified Mechanic, dispatched by YourMechanic right to your location, please request a fuel leak inspection and diagnostic - tubing and tank and the responding certified mechanic will get this resolved for you once and for all. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Gas tank is leaking

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: Squeaky noise only when idle

Hi there. Usually a squealing noise coming from the engine compartment during idle is an indication of a loose or worn out belt or pulley. However, it can also be a transmission issue if it's low on transmission fluid or...

Q: What does the amber Check Engine Light mean

The amber Check Engine Warning Light is located on the instrument panel. When this light illuminates, there is a problem with either the engine control system, the throttle control system, or the electronic automatic transmission control system. Your vehicle should...

Q: My car will not fill up with gas at the pump

If it happens at every gas station and not just one, there is most likely a problem with your vehicle's vent / purge system for the fuel tank. When you fill up, the vapors inside the gas tank need to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...