Regan Brown
Draining a fuel tank can be a tricky process, and even more so when it comes to the Chevrolet Cobalt. The Cobalt's fuel tank is known to have issues with leaks, which can be dangerous and lead to fires or explosions. To avoid such issues, it's important to know how to properly drain the fuel tank. While it is always recommended to consult a professional mechanic, some Cobalt owners prefer to do it themselves. This process involves tools like a fuel line removal tool, screwdrivers, fuel line fittings, gas containers, and more. The process includes removing the fuel line from the rail, attaching a new fuel line, locating and removing the fuel pump fuse, and using a bypass wire to drain the tank.
| Characteristics | Values |
|---|---|
| Tools required | Fuel line removal tool or two screwdrivers and a third hand, Fuel line, GM male fuel line fitting, Gas containers, 16g wire, Alligator clip, Thin eye hook, Battery charger/tender |
| First steps | Make your own "bypass wire" by soldering a small shafted eye hook and wire, then attach an alligator clip to one end |
| Next steps | Remove the fuel line from the rail using a fuel line tool or two small screwdrivers, attach a 3' fuel line with a fitting to the main fuel line, open the fuse box and locate the fuel pump fuse, remove the fuse and place the male end of the bypass wire into the bottom left slot, connect the alligator clip to the terminal to kick on the fuel pump and start draining |
| Final steps | Continue draining until the system is flushed, disconnect the alligator clips, remove the bypass, reinsert the fuel pump relay, disconnect and reconnect the fuel line, refill with new fuel |
| Additional considerations | Depressurize the fuel system, keep the battery charger/tender hooked up while draining to prevent battery drain |
| Signs of a leaking fuel tank | Pool of gasoline underneath the tank, noticeable smell, worsening fuel economy, potential fire or explosion |
Explore related products
What You'll Learn
Using a fuel line removal tool or two screwdrivers
Draining your Cobalt fuel tank can be done in a few different ways, one of which is by using a fuel line removal tool or two screwdrivers. This method also requires a third hand, a fuel line of around 3 feet, a GM male fuel line fitting, gas containers, a 16g wire, an alligator clip, and a thin eye hook.
Firstly, make a "bypass wire" using a small shafted eye hook, by soldering the wire to the eyelet and using the shaft as the male prong. Then, take an alligator clip and solder the other end of the wire to one of its grips. Next, use a fuel line tool to remove the fuel line from the rail, or do this step carefully with two small screwdrivers. Take your 3-foot fuel line with the fitting on it and attach it to the main fuel line on the car, ensuring the fittings snap together.
Now, open the fuse box and find the fuel pump fuse (number 3412, near the top bolt). Remove the fuse, placing the male end of your bypass into the bottom left slot, closest to the bolt. Then, with your fuel line in the tank ready to drain, connect the alligator clip to the terminal. This will activate the fuel pump and start the draining process. You can monitor your fuel level by turning your key to the Accessory position. When the tank is empty or close to it, you can stop draining and pour in half a gallon of your new fuel.
Finally, to stop the draining process, disconnect the alligator clips. Then, remove the bypass, reinsert the fuel pump relay, and disconnect your fuel line from the car. Reconnect the fuel line back to the fuel rail.
Draining the Bandit Fuel Tank: A Step-by-Step Guide
You may want to see also
Explore related products
Disconnecting the fuel pump relay
Before beginning, it is important to gather the necessary tools. For this task, you will need a fuel line removal tool or two screwdrivers and a third hand, a fuel line of approximately 3 feet, a GM male fuel line fitting, gas containers to hold the drained fuel, a 16g wire, an alligator clip, and a thin eye hook. Additionally, ensure you have a battery charger or tender connected during the process to prevent battery drain.
The first step is to create a "bypass wire." Take a small shafted eye hook and use it in reverse by soldering the wire to the eyelet. The shaft will serve as the male prong, as regular male prongs are too wide for the fuel pump relay contacts. Now, solder the alligator clip to the other end of the wire.
Next, locate the fuel line rail. Carefully use the fuel line tool or two small screwdrivers to remove the fuel line from the rail. Attach your 3-foot fuel line with the GM male fuel line fitting to the main fuel line on the car, ensuring the fittings snap together securely.
Open the fuse box and locate the fuel pump fuse, which is typically numbered 3412 and located near the top bolt. Remove this fuse and insert the male end of your bypass wire into the bottom left slot, closest to the bolt.
At this point, you can connect the alligator clip to the terminal, activating the fuel pump and initiating the draining process. Keep an eye on the fuel level by turning the key to the accessory position. Continue draining until the system is flushed and only your desired new fuel remains in the lines.
Finally, to stop the draining process, simply disconnect the alligator clips, remove the bypass, and reinsert the fuel pump relay. Don't forget to disconnect your fuel line from the car and reconnect it to the fuel rail.
It is important to note that fuel systems can be under pressure, so always exercise caution when working on any part of the fuel system. Additionally, ensure that you are working in a well-ventilated area to avoid inhaling fumes. By following these steps carefully, you can successfully disconnect the fuel pump relay and drain the fuel tank of your Chevrolet Cobalt.
Draining the Fuel Tank of a 2006 BMW E90
You may want to see also
Explore related products
Depressurising the fuel system
Depressurising a fuel system is an important safety precaution that must be taken before performing any maintenance or repair work on the fuel system. Working on a pressurised fuel system can lead to serious injury or even death due to the high pressure of gasoline and diesel fuels. Depressurising the system removes any pressure and reduces the risk of accidents.
One method is to wait for the engine to cool down. Then, start the engine and drive it until the tank is empty. When that's done, open the fuel pump valve and then close it. It will depressurise the fuel lines. Another way is to wait for the engine to cool down and use a wire to pull the fuel pump relay. Use a torch to see inside the fuel vessels. The actual mechanism of the release can release the pressure in a fuel system. If it is a surge tank, one can use a valve to regulate the flow of fuel that would flow into the tank. In this case, when pressure is applied to the tank, it will force energy out through its openings.
The quickest way to depressurise the fuel system is to open the drain valve at the bottom of the fuel tank and allow the fuel to run out until the flow becomes just a trickle. There is no significant pressure in any fuel line that could seriously injure or kill you. A far more dangerous situation is running out of fuel on the highway. The fuel system should only depressurise if the tank is an emergency. If depressurising is necessary, the emergency shutoff valve and the emergency valve must be closed. The fuel tanks should depressurise by turning the fuel shutoff valve open. The tank will take a few minutes to depressurise.
To depressurise your car’s fuel system, turn off your engine and remove the keys from the ignition. Remove the fuel filler cap to release any pressure trapped inside. Once you’ve done this, locate a safe place to allow all remaining gasoline to drain from your tank slowly. Remember that safety should come first when working around gasoline or other automotive fluids. Another way to depressurise a vehicle’s fuel system is by connecting an air hose. A rod tool or a rodless valve is essential in maintaining and repairing fuel systems, particularly in depressurising them.
Draining a 2002 F150 Fuel Tank: Step-by-Step Guide
You may want to see also
Explore related products
Removing the fuel tank
To remove the fuel tank of a Cobalt, you will need to first depressurise the fuel system. Then, gather the necessary tools: a fuel line removal tool, two screwdrivers, a third hand, a fuel line, a GM male fuel line fitting, gas containers, 16g wire, an alligator clip, and a thin eye hook.
Next, make a bypass wire by soldering the wire to an eyelet and using the shaft as your male prong. Take the alligator clip and solder the other end of the wire to one of its grips. Then, use the fuel line tool to remove the fuel line from the rail, being careful if you are using screwdrivers instead. Attach your new fuel line to the main fuel line, ensuring the fittings snap together.
Now, open the fuse box and locate the fuel pump fuse (number 3412, near the top bolt). Remove the fuse and place the male end of your bypass wire into the bottom left slot, closest to the bolt. Make sure your fuel line is in the tank ready to drain, and connect the alligator clip to the terminal. This will activate the fuel pump and begin the draining process. You can monitor the fuel level by turning your key to the accessory position.
Once the tank is empty or close to it, you can stop draining and add half a gallon of your new fuel. Continue draining until the system is flushed and only has your desired new fuel in the lines. To stop the process, simply disconnect the alligator clips, remove the bypass, and reinsert the fuel pump relay. Finally, disconnect your fuel line from the car and reconnect it to the fuel rail.
Draining Diesel Fuel Tanks: A Step-by-Step Guide
You may want to see also
Explore related products
Inspecting the tank for leaks
To inspect a Cobalt fuel tank for leaks, a mechanic will first inspect the ground underneath the gas tank to see if gasoline has pooled underneath. They will then inspect the tank itself to identify the source of the leak. This involves determining whether the leak is coming from the tank or the fuel lines, as the repair method will differ depending on the origin of the leak.
For instance, if the tank is corroded and leaking, the mechanic will need to assess whether the original tank can be repaired or if it needs to be replaced. Punctures, on the other hand, are typically more serious and often require the entire tank to be replaced. In areas with a lot of snow and salt, corrosion may be more prevalent and rapid, so it is important to regularly inspect the tank for any signs of deterioration.
To prevent dangerous flammable vapours from escaping the tank, it is important to depressurize the fuel system before beginning any work. This can be done by using a battery charger/tender while draining the tank.
Draining and Cleaning Your Boat's Fuel Tank: A Step-by-Step Guide
You may want to see also
Frequently asked questions
First, you will need to depressurize the fuel system. Next, take a fuel line tool and remove the fuel line from the rail. You can do this with two small screwdrivers. Take your 3' fuel line with the fitting on it and attach it to the main fuel line on the car. Now, open the fuse box and locate the fuel pump fuse. Remove that fuse, placing the male end of your bypass into the bottom left slot. Then, making sure your fuel line is in the tank ready to drain, connect the alligator clip to the terminal. This will kick the fuel pump on and drain it all out.
You will need a fuel line removal tool, two screwdrivers and a third hand, a fuel line, a GM male fuel line fitting, gas containers, 16g wire, an alligator clip, and a thin eye hook.
You should be able to notice the leak underneath the rear of the vehicle accompanied by a noticeable smell. It is important to inspect the kind of fluid leaking to ensure that it is gasoline.
If your cobalt fuel tank is leaking, you should take it to a mechanic. They will first inspect the ground underneath the gas tank to see if gasoline has pooled under the tank. The mechanic should then inspect the tank itself to identify the source of the leak. They will then determine if the original tank can be repaired or if it needs to be replaced.
