Running Out of Gas: What Happens to Your Car & How You Can Get Help

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An in-depth guide to get you back on the road in no time
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Running out of gas is a more common problem than you may think, but that doesn't make it any less frustrating to get stranded on the side of the road. Why is your car refusing to cooperate, and how are you supposed to get to your destination now? Don't worry—getting help is easy, even if you aren’t near a gas station. Keep reading to figure out what happens when you run out of gas, and, most importantly, what you can do next.

Things You Should Know

  • When your car runs out of gas, you lose control of your braking and steering. Soon after, your vehicle will stall because there isn't enough fuel to power your engine.
  • Once there's no gas available, your vehicle will abruptly stop, and the fuel gauge on your dashboard will read empty.
  • If you're running out of gas while driving, pull over to the right side of the road and turn on your hazard lights. Verify your location and request help from a roadside assistance service.
Section 1 of 4:

What happens to your car when you run out of gas?

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    Gas provides the fuel to keep your car and engine running. As your engine shuts off (from lack of fuel), you lose the ability to control your vehicle until your car stalls. When there's no gas left, your car abruptly stops–as if you took the key out of the ignition! [1]
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Section 2 of 4:

Signs of Low Fuel

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    The ability to maneuver your car is directly connected to the engine running. Pull over immediately if you notice that it’s hard to brake or your steering feels uncontrollable. [2]
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    Without enough fuel to support your engine, you may have difficulty starting your car or keeping it on. [3] This is especially dangerous if you’re driving on the highway, so make sure to pull over if you are running low on gas!
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    To avoid running out of gas, never let your gas tank get below ¼ full! Locate the nearest gas station when your fuel gauge is running low. [4]
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Section 3 of 4:

Getting Help

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    If you're driving on the highway, turn on your hazard lights to warn other drivers. Pull over to the right side of the road and park on the shoulder if possible. [5]
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    Use your phone or car’s GPS to quickly identify your location. [7] If you don’t have service, look at road signs or nearby buildings to determine the general area of where you are.
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    If you have a roadside assistance membership (like AAA Road Service ) or a program through your car insurance company, give them a call to request for help. They will bring you enough gas to get you to the nearest gas station or tow your car. [8]
    • If you don’t have insurance or a membership, most states have emergency highway response systems that provide assistance for free–find their phone number on your local department of traffic (DOT) website. [9]
    • If you don’t have cell service, flag down someone on the road. Ask them to bring you gas or make a phone call for you. Use your best judgment when approaching strangers, and be cautious if someone insists on giving you a free ride!
    • Alternatively, have a friend or family member bring you gas or call roadside assistance on your behalf. If all else fails, walk to a nearby gas station and bring gas back to your car.
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    After refueling, you may have to pump your gas pedal a few times (with the car off) to get the new gas flowing to your engine. Insert your key into the ignition and turn it to the ‘on’ position (without starting your engine). Repeat 3-4 times before turning the key all the way to restart the car. [10]
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Section 4 of 4:

Will running out of gas damage your car?

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    The fuel pump is designed to pull gas from the bottom of your gas tank and deliver fuel to your engine. Gas acts as a lubricant and cooling agent for the fuel pump, so your fuel pump overheats when your gas tank is empty (and only air is passing through). [12]
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    Attached to the bottom of the fuel pump is a fuel filter that removes debris from your gas. [16] Gas moves from the fuel pump to your car’s engine via fuel injectors. When gas levels are low, impurities are pushed through the filter, clogging the fuel injectors and preventing gas from reaching your engine. [17]
  3. 3
    If the vehicle is powered by diesel, the fuel system will need to be bled in order for the engine to restart. All diesel engines have two fuel pumps: the low-pressure lift pump draws fuel from the tank and brings it to the high-pressure injector pump. If the lift pump pushes air into the injector pump, the system will become air-locked, preventing fuel from getting to the injectors.
    • To bleed the system, start by cracking open a bleed screw atop the fuel filter. Run the fuel pump (either with the key on the on position or by cranking) until fuel sprays out of the screw. Then close it.
    • Next, back off all the fittings on the lines connected to the fuel injectors. Crank the engine until fuel sprays out of each injector, then tighten the fittings back down.
    • Pulling a decompression valve, if present, will save battery power during this process by making the engine easier to turn over.
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      Tips

      • To prevent car troubles, make sure to have your vehicle inspected at least every 12 months! [18]
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      References

      1. ↑ https://youtu.be/bWK67tpo13c?t=197
      2. ↑ https://youtu.be/bWK67tpo13c?t=186
      3. ↑ https://youtu.be/bWK67tpo13c?t=192
      4. ↑ https://driversed.com/trending/what-do-if-you-run-out-gas
      5. ↑ https://driversed.com/trending/what-do-if-you-run-out-gas
      6. ↑ https://www.consumerreports.org/car-maintenance/what-to-do-when-your-car-stalls
      7. ↑ https://driversed.com/trending/what-do-if-you-run-out-gas
      8. ↑ https://driversed.com/trending/what-do-if-you-run-out-gas
      9. ↑ https://www.txdot.gov/about/programs/highway-roadside-assistance.html
      1. ↑ https://youtu.be/GcmGRl358r8?t=26
      2. ↑ https://youtu.be/GcmGRl358r8?t=42
      3. ↑ https://youtu.be/WWDFAPXsk9s?t=167
      4. ↑ https://youtu.be/WWDFAPXsk9s?t=330
      5. ↑ https://youtu.be/WWDFAPXsk9s?t=245
      6. ↑ https://www.consumeraffairs.com/automotive/how-much-does-it-cost-to-replace-a-fuel-pump.html
      7. ↑ https://youtu.be/WWDFAPXsk9s?t=85
      8. ↑ https://youtu.be/WWDFAPXsk9s?t=104
      9. ↑ https://www.dps.texas.gov/section/vehicle-inspection/vehicle-inspection-program-overview

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