
If you need to drain the fuel tank on a 2006 MX5, there are a few methods you can try. One way is to undo the 14mm hex drain bolt at the bottom of the tank and empty it out. Another method is to disconnect the fuel feed in the engine bay, attach a hose pipe, and drain using the car's fuel pump. If you're looking to get to the fuel pump for service, there is a pump service panel inside the trunk area under the rear quarter panel. It's important to exercise caution when attempting any of these methods, and if you're unsure, it may be best to seek professional help.
How to drain the fuel tank on a 2006 MX5
| Characteristics | Values |
|---|---|
| Drain bolt size | 14mm hex |
| Drain bolt location | Bottom of the tank |
| Alternative method | Disconnecting the fuel feed in the engine bay |
| Tools required | Hose pipe |
| Additional considerations | Risk of damaging the fuel tank plug if seized |
| Post-drain steps | Flush with petrol, check for leaks |
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What You'll Learn

Removing the drain plug
To remove the drain plug on a 2006 MX5, you will need to locate the drain bolt at the bottom of the fuel tank. This is a 14mm hex drain bolt. You can access it by looking through the front of the passenger-side rear arch. You will see the section of the tank that hangs down, and the bolt should be visible there.
Once you have located the drain bolt, you can undo it to empty the tank. It is recommended to place a bucket or container underneath the bolt to catch the fuel. If you are concerned about damaging the drain plug, an alternative method is to disconnect the fuel feed (not return) in the engine bay. Attach a hose pipe and drain the fuel using the car's fuel pump.
Another method to drain the fuel tank is to disconnect the feed from the tank to the fuel filter. Place a container underneath to catch the fuel and leave it for about an hour. Afterward, you can pour some petrol through to flush out the remaining diesel.
If you need to access the fuel pump for service, there is a pump service panel inside the trunk area under the rear quarter panel. If you are unable to siphon out the remaining fuel, you will need to carefully drop the tank with the fuel still in it. Always exercise caution when working with fuel and ensure proper ventilation.
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Disconnecting the fuel feed
To do this, locate the fuel feed (not return) in your engine bay. Once you've found it, simply disconnect it. Now, attach a hose pipe to the disconnected fuel feed. You can then drain the fuel using your car's fuel pump.
If you're worried about damaging the fuel tank plug, there's another method you can try. Look through the front of the passenger side rear arch. You should see the part of the tank that hangs down where the nut is. Now, disconnect the feed from the tank to the fuel filter. It will start to drain, so make sure you have something to catch the fuel underneath. Leave it for an hour or so. Then, pour some petrol through to flush it out.
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Using a hose pipe and the car's fuel pump
If you want to drain your 2006 MX5's fuel tank using a hose pipe and the car's fuel pump, here is a step-by-step guide:
Firstly, locate the fuel feed in the engine bay. You will need to disconnect this, but be careful to only disconnect the fuel feed and not the return. Once you have located and disconnected the correct pipe, attach a hose pipe to it. The other end of the hose pipe should be placed in a suitable container to catch the drained fuel. Ensure that the container is large enough to hold the amount of fuel in your tank and that it is placed securely to avoid any spills or accidents.
Now, you can use your car's fuel pump to drain the tank. Turn on the fuel pump, and the fuel should start draining out of the tank through the hose pipe. This process may take some time, depending on how much fuel is in the tank. Be patient and allow the pump to do its job.
Once the tank is empty, you should turn off the fuel pump. Detach the hose pipe from the fuel feed and securely replace the cap on the fuel feed to prevent any leaks. Now, you will need to flush the system with petrol. Fill the tank with petrol and run the engine to ensure that any remaining diesel is flushed out of the system.
It is important to note that you should only attempt this process if you have adequate knowledge of car mechanics and safety procedures. Working with fuel can be dangerous, so take all necessary precautions and consider seeking professional assistance if you are unsure about any steps.
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Siphoning out the fuel
If you are unable to siphon out the fuel from your 2006 MX5, you will have to carefully drop the tank with the fuel in it. However, siphoning the fuel is the ideal method if you can manage it.
Firstly, you can try undoing the 14mm hex drain bolt at the bottom of the tank and emptying the tank. However, if you are worried about damaging the fuel tank plug on removal, you can try the following method. Disconnect the fuel feed (not return) in the engine bay, attach a hose pipe, and drain using the car's fuel pump.
Alternatively, you can disconnect the feed from the tank to the fuel filter, and the fuel will drain out. Stick something under it to collect the fuel and leave it for an hour or so.
After draining the tank, it is recommended to pour some petrol through to flush it out.
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Removing the tank
An alternative method to drain the fuel tank is to disconnect the fuel feed (not the return) in the engine bay. By attaching a hose pipe and using the car's fuel pump, the tank can be drained without removing the tank itself. This method is recommended if you are concerned about potential damage to the fuel tank plug.
If access to the fuel pump is required for servicing, there is a Pump Service Panel located inside the trunk area under the Rear Quarter Panel. This provides access to the fuel pump without having to drop the tank.
If you need to drop the tank, it is important to siphon out the remaining fuel first. Failing to do so will result in carefully dropping the tank with the fuel still inside. This can be a challenging task and may require professional assistance or further guidance.
To access the drain plug, look through the front of the passenger side rear arch. You should be able to spot the nut on the part of the tank that hangs down.
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Frequently asked questions
There are a few ways to do this. You could undo the 14mm hex drain bolt at the bottom of the tank and empty it out. Or, disconnect the fuel feed in the engine bay, attach a hose pipe, and drain using the car's fuel pump.
Yes, you can disconnect the feed from the tank to the fuel filter and let it drain into a bucket.
Leave it for about an hour.
After draining, pour some petrol through to flush it out.
There is a Pump Service Panel inside the Trunk area under the Rear Quarter Panel. If you are unable to siphon out the remaining fuel, you will have to carefully drop the tank with the fuel still in it.










































