Skip the auto shop - Our mechanics make house calls

Q: My suburban has a gas leak but only leaks when someone turns the key on, other then that it doesn't leak at all. What could this b

asked by on

I want to know what is wrong with my gas tank on my suburban 2004 1500, when someone turns the key on , gas comes pouring out, I need to know what's wrong so I can get the part and fix it.

My car has 180000 miles.
My car has an automatic transmission.

A: The reason it leaks is the fuel pump is und...

The reason it leaks is the fuel pump is under pressure when you turn on the key and will pump the fuel out of where ever it is leaking. Do not drive it till the leak is found and fixed. If you need help with this, a technician from YourMechanic can come to your home or office to detect the leak and make an appropriate repair.

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Swaped used ecm for original, sienna will not start, do I need to take it to the dealer to reprogram?

You may not be able to have the ECM you purchased used reprogrammed. You would need to check with a dealer. Some cannot be swapped from one vehicle to another. They function this way so that parts could not be...

Q: My truck turns over but won't start.

When a truck won't start, it's usually going to be an ignition or fuel system-related malfunction. The fact that your gas gauge was "ticking" a bit may be an indicator that an electrical problem exists, causing the ignition system to...

Q: Where is the coolant leak coming from?

For an issue like this, you would need to do a cooling system and pressure test so the actual leak can be found. Once the test is done by a mechanic then you would get a quote for the exact...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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.