Regan Brown
If you've put the wrong fuel in your Citroen Picasso, you're not alone. Many people have done the same and have successfully drained their fuel tank. One method is to place a suction line down the filler pipe and drain it out until it is dry. If the car has been driven since the wrong fuel was put in, you'll need to drain it, refill with diesel, and then attach another suction line to the return line at the fuel pump unit. You can also use a manual pump to remove the diesel from the tank. If you have access to the fuel pump under the cap under the rear seat, you can remove this and drop a cheap in-tank pump to get the fuel out into containers.
| Characteristics | Values |
|---|---|
| Fuel tank draining method | Using a suction line |
| Fuel type | Diesel |
| Alternative method | Using a manual pump |
| Alternative method | Disconnecting the fuel line from the engine |
| Alternative method | Draining from the fuel filter |
| Alternative method | Using an electric pump |
| Alternative method | Dropping the tank |
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What You'll Learn
Use a suction line to drain the tank
Citroen cars have simple fuel tanks, and extracting mixed fuel from one is not hard. One way to do this is by using a suction line down the filler pipe and draining it out until it is dry. Here is a step-by-step guide on how to do this:
First, ensure that you are working in a well-ventilated area and that there are no open flames or sources of ignition nearby. Additionally, wear protective gear such as gloves, safety goggles, and a face mask to avoid any fuel splashes or inhaling fumes.
Next, you will need a hose and a hand pump. Insert one end of the hose into the fuel tank, ensuring it reaches the bottom of the tank. Then, use the hand pump to create suction and draw the fuel out of the tank. Place the other end of the hose into a container to catch the fuel.
Use extreme caution to avoid ingesting any fuel. This traditional method of manual siphoning requires you to suck on one end of the hose to start the flow, then quickly place the hose into a container. A siphon pump offers a safer and more efficient way to drain fuel. Attach the pump to the hose, insert one end into the fuel tank, and the other end into a suitable container. Then, operate the pump to start the fuel flow.
Once the tank is empty, reinstall the fuel tank cap to prevent any debris or moisture from entering the tank. It is crucial to dispose of the drained fuel properly. Do not pour it down the drain or into the soil, as it can contaminate the environment. Instead, take the fuel to a hazardous waste disposal site or a recycling centre for proper disposal.
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Disconnect the hand priming pump
Disconnecting the hand priming pump on a Citroen Picasso is a necessary step when draining the fuel tank. This process can be done in an emergency if the wrong fuel has been put into the tank.
Citroen Picassos have simple fuel tanks, and there are a few methods to drain them. One method is to place a suction line down the filler pipe and drain the tank until it is dry. Once the wrong fuel has been removed, refill the tank with 15 litres of diesel. Then, attach another suction line to the return line at the fuel pump unit and suck the pure diesel through the system, purging any remaining petrol.
Another method is to disconnect the hand priming pump. To do this, you must first access the pump. This may require dropping the tank down, as it is not always possible to access the pump from inside the car. If you need to drop the tank, you will need to get the car up pretty high. There are two 13mm bolts on either side of the tank and two 13mm bolts holding the strap that goes from front to back. Before dropping the tank, you will need to drop the exhaust, remove the heat shields, and unclip the handbrake cables. Use a jack and a block of wood to support the tank when you unbolt it. The tank will stay attached to the filler neck pipe and pivot on it, tilting to the nearside. This should give you enough room to access the pump.
Now, disconnect the hand priming pump north of the pump. You can then pump out the contents of the tank. Once the tank is empty, fill it up with diesel and continue pumping to bring the diesel up to the primer from the fuel tank.
If the Citroen Picasso does not have a manual pump, you can bypass the intank pump relay and disconnect the fuel line from the engine. This will allow you to pump directly from the tank to a hose arrangement using the car's onboard pump.
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Drop the tank down
To drop the tank down, you will need to have the car raised quite high. There are two 13mm bolts on either side of the tank and two 13mm bolts holding the strap that goes from front to back. First, drop the exhaust, remove the heat shields, and unclip the handbrake cables. Use a jack and a block of wood to support the tank when you unbolt it. The tank will stay attached to the filler neck pipe and pivot on it, so the tank tilts to the nearside. This should give you enough room to access the pump. If the tank is full of fuel, you can undo the hose clip at the bottom of the filler neck and drain it out.
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Drain from the fuel filter
Citroen cars have simple fuel tanks, and extracting mixed fuel from them is not hard. One way to drain the fuel tank is to place a suction line down the filler pipe and drain it out until it is dry. If the car has been driven since the wrong fuel has been put in, you can drain it out, refill with diesel, and then attach another suction line to the return line at the fuel pump unit. You can then suck the diesel through the system, which purges the petrol and leaves the system clear.
If your Citroen Picasso has a manual pump, you can use it to drain the fuel tank. First, disconnect the pump north of the pump. Then, pump out the contents of the tank. Once empty, fill up with diesel and continue pumping to bring the diesel up to the primer from the fuel tank.
If your car does not have a manual pump, you can drain the fuel tank from the fuel filter. To do this, you will need to turn the ignition on and off so the car pumps itself out, down to about a quarter of a tank. Then, put some diesel in to get to the fuel station, then fill it up and keep the tank above half full for a while.
Another way to drain the fuel tank is to access the fuel pump under the cap under the rear seat. Remove this and drop a cheap in-tank pump to get the fuel out into containers. Refill with fresh fuel and add about a cup of two-stroke oil to lubricate the pump and injectors.
If you are unable to access the fuel pump from inside the car, you will need to drop the tank down. You will need to get the car up pretty high. There are two 13mm bolts on either side of the tank and two 13mm bolts holding the strap that goes front to back. First, drop the exhaust down, remove the heat shields, and unclip the handbrake cables. Use a jack and a block of wood to support the tank when you unbolt it. The tank stays attached to the filler neck pipe and pivots on it, so the tank tilts to the nearside. This should give you enough room to access the pump. If you have a lot of fuel in the tank, you can undo the hose clip at the bottom of the filler neck and drain it out here.
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Remove the in-tank pump
To remove the in-tank pump of a Citroen Picasso, you will first need to jack up the car and place it on stands. Next, drain the fuel and remove the exhaust heat shield. Then, move the handbrake cables and remove the four bolts. Remove the rubber filler pipe hose, pipes, and cables. Pull the tank out enough to access the fuel pump.
Before removing the pump, you will need to siphon off the majority of the fuel. Place a drainage container under the bottom hose coupling. Remove the four bolts and ease towards the filler end of the tank by pulling and raising the far end with your foot. Once the tank is lowered, the wiring connector and the two fuel pipes can be removed. Then, unscrew the plastic collar that holds the fuel pump in place. This is usually done anti-clockwise. If it can't be moved by hand, use a long screwdriver to lever the collar.
Now, you can remove the wiring from the in-tank pump, taking note of the live and earth/negative colours. Remove the pump from the plastic housing cage and cut or pull off the plastic hose from the bottom of the pump.
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Frequently asked questions
If you have access to the fuel pump under the cap under the rear seat, remove this and drop a cheap in-tank pump to drain the fuel into containers. If you don't have access to the fuel pump, you'll have to drop the tank down. You don't need to remove the tank completely, but you will need the car to be pretty high up. There are two 13mm bolts on either side of the tank and two 13mm bolts holding the strap that goes front to back. First, drop the exhaust down, remove the heat shields and unclip the handbrake cables. Use a jack and a block of wood to support the tank when you unbolt it.
Citroen has some vehicles that have manual primer pumps, which can be used to empty the fuel tank in an emergency. Simply place a suction line down the filler pipe and drain it out until it is dry. Once you've drained the wrong fuel, refill with 15 litres of diesel and then attach another suction line to the return line at the fuel pump unit. Suck the pure diesel through the system to purge the petrol.
You may need to replace the fuel tank pump/gauge as well. Also, get the fuel filter changed as soon as possible after a misfuelling as the petrol can cause a tarry-like substance to build up in the filter.
If you have loads of fuel in the tank, you can undo the hose clip at the bottom of the filler neck and drain it out there.
