Skip the auto shop - Our mechanics make house calls

Q: Need a way to drain out 1 year old gasoline sitting in an otherwise good car.

asked by on

There is a check-valve/screen or some sort of block that doesn't allow for siphoning. I had to figure this out after I already bought a multi-use pump transfer system. I really need to start this car while mitigating damages. I inherited it and wouldn't want my mom's (rip, God bless ) car to further depreciate or go to waste. I am not sure if attaching a gasoline hose to fuel rail and removing "scharder" valve is a good idea. I am not too familiar with modifications that must then be made to fuel relay and fuel *fuse. Also, I am concerned that, even if I was much more familiar with autos, the fuel pump would undergo major strain and heat if I were to use this method to drain the remaining 15% of fuel. Isn't there some simpler way to mechanically drain the remaining gasoline, so that I can then proceed buy fresh gasoline and dilute it?

My car has 31000 miles.
My car has a manual transmission.

Hi there. If the fuel is only a year old, then it should be fine to drive off and fill up with fresh gas as it runs out. If you really want to get the fuel out of the tank, then you need to disconnect the fuel line under the vehicle. When I do this, I disconnect the fuel line at the filter and jump the fuel pump relay to pump it out. The only other way would be to drop the tank and drain it. If you are really concerned and need to have this done, consider having certified mechanic come to your location to perform this cleansing for you and fill your gas tank.

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!
  1. Home
  2. Questions
  3. Need a way to drain out 1 year old gasoline sitting in an otherwise good car.

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: I have a Toyota Venza. Are my Brake lines connected to my rotors?

The brake lines are connected to the brake calipers not the rotors. If you are hearing a noise from the rotor area when the brakes are applied, then there could be an issue with the rotors being too thin or...

Q: Vibration coming from wheel and brake pedal when I'm idle

Hey there, thanks for writing in about your 2005 Scion xA. You need to check the brake booster to see if it has a vacuum leak in the check valve or booster when you are pressing on the brakes. If...

Q: No heat in car and engine light on for overheating

Hi There, Your heating issue may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater core is a small radiator like unit that circulates the hot coolant from the...

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 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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.