Skip the auto shop - Our mechanics make house calls

Q: Lost half a tank of fuel in less than 2 miles. the tank is empty. can't see a leak

asked by on

Coming home from a job i got off the freeway and checked my gas gauge about half way from the off ramp to my house, it showed half a tank, i had just the day before filled it up and only traveled 112 miles on a nearly full 28 gallon tank. about half a mile from my house the low fuel light came on and the gauge showed empty, way below the 'E'. i didn't smell any fumes or have any loss of power so i thought something was wrong with the Gauge or electronics. As i backed into my driveway the truck died. i got out and looked under the truck and under the hood and didn't see any leakage and no gas odors at all. I loosened the gas filler cap and there was pressure in the tank, it blew air (and fumes) OUT of the tank as i unscrewed the filler cap. checked as many of the fuel lines as i could see and found nothing disconnected or split. I don't see any holes in the tank either

My car has 215000 miles.
My car has an automatic transmission.

I would first get a 5 gallon gas can and put it in the tank to see if gas gauge registers the fuel. Then turn on the key and listen for fuel pump operation to see if pump runs. Recheck for any leaks in the engine compartment and under truck. Pull out oil dipstick to see if you are overfull of oil and it smells like fuel. You may have a bad fuel pressure regulator that leaked all the excess fuel into the engine real fast. You would of noticed the engine running rough or blowing black smoke. I suggest you get some help from a certified technician, like one from YourMechanic, if you can’t pinpoint the leak.

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
  • Home
  • Questions
  • Lost half a tank of fuel in less than 2 miles. the tank is empty. can't see a leak

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: took my 2002 suburan to the chevy garage and I told them how I had to put it in park, then neutral ,then back to park to start the

Even from a distance, my gut tells me this issue is shifter-related. The shifter cable or mechanism can be worn or out of adjustment. It can be just enough that it does not sit in Park or Neutral just so....

Q: Is it worth getting my fuel gauge fixed?

The fuel level sending unit is mounted in the fuel tank on the fuel tank module. It is one of the simplest parts to replace since the fuel pump in this vehicle is located under the back seat. If you...

Q: Oil leaking

Hello. If oil is leaking out of your car, it is something that you should address as soon as possible. There are several different places where you could be leaking oil. Your valve cover gaskets could be leaking oil, or...

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 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...