Draining Fuel Tank In Vw Golf: Step-By-Step Guide

how to drain fuel tank vw golf

If you need to drain the fuel tank of your VW Golf, there are several methods you can try. Some of these include siphoning the fuel through the filler hose, disconnecting the inlet hose to the fuel filter and using a gas can, or removing the filler pipe and siphoning through the pipe feed. Before attempting any of these methods, it is important to consider safety precautions to mitigate the risk of fire or fuel spillage. Additionally, some users have suggested that draining the tank may not be necessary, especially if the car has been sitting for a short period, and that using fuel stabilizers can help maintain fuel quality during storage.

Characteristics Values
Fuel type Gasoline, Ethanol
Fuel stabilizer Sta-Bil, Techron
Tank material Plastic, Stamped steel
Tank capacity 7 months
Tank location Under rear seat behind driver
Draining methods Disconnect inlet hose, Siphoning, Puncturing tank, Removing fuel pump
Tools Hose, Fuel pump, Relay, Wire
Considerations Fire hazard, Anti-siphoning device, Fuel spillage

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Disconnect the inlet hose to the fuel filter

Disconnecting the inlet hose to the fuel filter is a crucial step in draining your VW Golf's fuel tank. Here is a detailed guide to help you through the process:

First, locate the fuel filter. This may vary depending on your car model, but it is generally accessible by removing the rear seat on the passenger side. Once you have located the fuel filter, you will need to identify the inlet hose. The inlet hose is the line that carries fuel into the fuel filter from the fuel tank. It is important to distinguish the inlet hose from the outlet hose, which carries fuel from the fuel filter to the engine.

Before disconnecting the inlet hose, it is essential to relieve the fuel system pressure. This can be done by opening the fuel filler cap and relieving pressure in the fuel tank. You may also need to relieve pressure in the fuel lines. Refer to your car's manual or seek guidance from a professional if you are unsure about this step.

Now, you can proceed to disconnect the inlet hose. Start by locating the hose clamp that secures the hose to the fuel filter. You may need to remove any protective covers or components that obstruct access to the hose clamp. Once you have located the hose clamp, use the appropriate tool to loosen it. For example, a flat-head screwdriver can be used to unscrew a screw-type hose clamp.

After loosening the hose clamp, gently pull the inlet hose away from the fuel filter. Be cautious, as the hose may be stuck or difficult to remove due to corrosion or the presence of old fuel. It is important not to use excessive force, as this may damage the hose or the fuel filter. If the hose is challenging to remove, you can try gently rocking it back and forth while pulling to loosen any connections.

Finally, once the inlet hose is disconnected, be prepared to catch any residual fuel that may spill from the fuel filter or inlet hose. Have a suitable container or drain pan ready to collect any fuel that may drip or spill during this process. Ensure that you dispose of the fuel safely and in accordance with local regulations.

Disconnecting the inlet hose to the fuel filter is a delicate task that requires attention to detail and a methodical approach. By following these steps, you can successfully complete this part of the process of draining your VW Golf's fuel tank. Remember to refer to your car's manual or seek professional advice if you encounter any issues or have any concerns.

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Remove the rear seat and siphon from the fuel tank

To drain the fuel tank of a VW Golf, you will need to remove the rear seat and siphon the fuel from the tank. Here is a step-by-step guide on how to do this:

Removing the Rear Seat

  • Move the rear seat all the way forward.
  • Remove the plastic trim covers on both sides of the seat to access the screws underneath. You may need to use a Phillips head screwdriver for this step.
  • Once the covers are removed, carefully pull up and then back on the side to remove it, being careful not to break the tab at the front.
  • Move the seat all the way back and remove any nuts or bolts securing the seat in place. You may need to use a ratchet and a 13mm socket for this step.
  • Check for any electrical connectors, such as seat heaters, airbags, or seatbelt buckles, and disconnect them.
  • Carefully slide the seat out, being mindful not to grab the seatbelt or damage any plastic trim.

Siphoning Fuel from the Tank

  • Locate the fuel tank and identify the filler hose or pipe.
  • Disconnect the inlet hose to the fuel filter and attach a hose to divert the fuel to a gas can or receptacle. Ensure you have a suitable container to collect the fuel.
  • Use the fuel pump relays to run the fuel pumps until the tank is empty. You can do this by squeezing the relay with your fingers or using a rubber band to keep it closed.
  • Alternatively, you can disconnect the fuel rail pressure side and divert the fuel to a gas can.

Please note that working with fuel can be dangerous, so ensure you take appropriate safety measures and have a thorough understanding of the VW Golf's fuel system before proceeding.

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Use the fuel pump to drain the tank

To drain the fuel tank of a VW Golf, you can use the fuel pump. This can be done by disconnecting the inlet hose to the fuel filter and setting up a hose to run into a gas can. This will prevent the fuel from spilling everywhere. Then, use the fuel pump relays to run the fuel pumps until the tank is empty.

To do this, remove the plastic cover of the fuel pump relay and squeeze it with your fingers to make contact. Alternatively, use a rubber band to keep the relay closed. You may also need to take out the fuel pump relay and put a jumper in there to keep it running. This can be done by taking a \"53\" relay out of the fuse box and using it to jump the fuel pump in the spot where the fuel pump relay was.

It is important to note that this procedure is a fire hazard, so appropriate measures should be taken to mitigate the risk. Additionally, the fuel lines should be purged after the tank is drained.

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Disconnect from the fuel rail pressure side

Disconnecting from the fuel rail pressure side is a method to drain the fuel tank of a VW Golf. This method involves removing the rear and right-side (passenger side) covers to access the fuel lines. It may also be necessary to remove the air cleaner housing. Once the fuel lines are exposed, the next step is to disconnect the inlet hose to the fuel filter. It is important to have a gas can or container ready to collect the fuel. After disconnecting the inlet hose, use the fuel pump relays to run the fuel pumps until the tank is empty. This can be done by removing the plastic cover of the fuel pump relay and squeezing it with your fingers to make contact, or by using a rubber band to keep the relay closed.

It is worth noting that this procedure is a fire hazard, so appropriate safety measures must be taken. Additionally, some VW Golf models may have an anti-siphoning device in place, which is designed to prevent fuel spillage in the event of a rollover. In such cases, an alternative method may be to use the filler pipe to siphon the fuel out.

To ensure a complete drain, it may be necessary to take out the fuel pump relay and use a wire to bypass it by bridging the two large terminals that the relay plugs into. This will keep the system running until the tank is empty.

This method provides a more direct approach to draining the fuel tank compared to other techniques, such as siphoning through the filler neck or removing the rear seat and siphoning from the fuel tank cap.

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Use a fuel stabiliser to prevent fuel from going stale

Fuel is a dynamic liquid that can go bad when left unused. Fuel stabilisers are designed to prevent this from happening by extending the lifespan of the fuel. They are particularly useful for vehicles that are not used regularly, such as classic cars or seasonal vehicles like motorcycles, snowmobiles and watercraft.

Fuel stabilisers are typically made from petroleum products and work by bonding with gasoline to prevent evaporation. This, in turn, prevents fuel from forming sticky resins that can ruin a carburetor. They also act as a protective layer for the fuel, preventing oxidation and limiting evaporation. Additionally, stabilisers contain a mixture of antioxidants and lubricants designed to repel water and prevent corrosion.

There are various fuel stabilisers available on the market, each with its own unique features and benefits. Sta-Bil, for example, has been around for over 60 years and is a popular choice for long-term storage, offering year-round protection. It keeps gasoline fresh for up to 24 months and is suitable for all gasoline-powered vehicles, including motorcycles, ATVs and watercraft. However, it is not suitable for diesel engines.

Another option is Berryman Total Fuel Stabiliser, which is compatible with all 2-stroke and 4-stroke engines. It contains high-performance corrosion inhibitors, metal deactivators and antioxidants to prevent rust and oxidation. It also prevents the formation of gum and varnish, ensuring easy start-up after extended storage.

The optimal time to add a fuel stabiliser is when fuelling up, especially if the vehicle will be stored for 30 days or more. It is recommended to add the required amount of stabiliser to the tank before filling up with fuel. This ensures maximum effectiveness in preserving fuel quality during storage.

By using a fuel stabiliser, you can prevent fuel from going stale and maintain the performance of your VW Golf, even when it is not driven regularly.

Frequently asked questions

There are several ways to drain the fuel tank of a VW Golf. One way is to disconnect the inlet hose to the fuel filter and set up a hose to run into a gas can. Then, use the fuel pump relays to run each of the fuel pumps until the tank is empty.

The fastest way to drain the fuel tank is to drive the car until the tank is empty and then refill it with fresh gas.

If your VW Golf has been sitting for a long time with a full tank of gas, you may need to drain the tank to prevent the gas from going stale. However, modern pump fuel does not go bad as quickly as older types of fuel, so draining the tank may not be necessary. You can also add a fuel stabilizer to the tank to help prevent the gas from going stale.

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