
Replacing the fuel filter in the Mazda Miata is a relatively straightforward procedure. The fuel filter is located in the middle, forward of the rear passenger-side wheel, and towards the centre. To replace the fuel filter, you will need to remove the plastic cover, which is attached with five plastic screw clamps. You will then need to loosen the hose clamps attached to the fuel filter and slide the fuel lines off. Next, place the new filter into the clamp and bend the clamp arms back into place. Finally, replace the cover and plug in the FPR.
| Characteristics | Values |
|---|---|
| Difficulty | Relatively straightforward |
| Tools required | 10 mm wrench, cross-tip screwdriver, pliers, knife or blade, vise grips, pan, socket, bolt, new retainer clip, pinch-nose pliers, new filter |
| Steps | Remove fuel filter cover, place pan under filter, remove bolt securing clamp, loosen hose clamps, slide fuel lines off, clamp rubber fuel lines, place new filter into clamp, bend clamp arms back into place, screw in clamp bolt, replace cover, plug in FPR |
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What You'll Learn

Removing the fuel filter cover
You will need a 10mm wrench to open the filter retaining clamp. You can use a knife or something with a blade to pry out the plastic cover screws.
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Removing the fuel filter
Next, use a 10 mm (13/32-inch) socket to remove the bolt that secures the clamp holding the fuel filter to the car. Once the bolt is removed, use pliers to loosen the hose clamps attached to the fuel filter. Be sure to clamp the rubber fuel lines with vise grips to prevent fuel from leaking before you slide the lines off the filter.
Now, you can carefully remove the old fuel filter. It is important to work quickly at this stage, as fuel will start to drip from the hoses. Have a new retainer clip ready on the intake side (the short horizontal pipe) of the new filter. Use pinch-nose pliers to detach the old clip, and quickly put the dripping hose on the new filter, ensuring the other end of the filter is clamped or plugged.
Once the hose is on, you can move the old filter out of the way and attach the exit hose to the new filter. Place the new filter into the clamp, bend the clamp arms back into place, and use long-nose vise grips to hold it together while you screw in the clamp bolt.
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Preparing the new filter
To prepare the new filter, you will need a new retainer clip. You can get this from the intake side (the short horizontal pipe) of the new filter. You will also need a 10mm wrench to open the filter retaining clamp. You may also need a knife or something with a blade to pry out the plastic cover screws.
Once you have the new filter and the necessary tools, you can begin the replacement process. First, remove the Miata fuel filter cover, which is attached with 5 plastic screw clamps. Use a cross-tip screwdriver to remove them partway, then gently pull them out. Note the position of the cover so you can easily reattach it later. Place a pan under the filter to catch any fuel that may leak.
Next, use a 10mm socket to remove the bolt that secures the clamp holding the fuel filter to the car. Loosen the hose clamps attached to the fuel filter with pliers, and use a screwdriver to slide the fuel lines off. Clamp the rubber fuel lines with vise grips to prevent fuel from leaking before you slide the lines off the filter.
Now you are ready to place the new filter into the clamp. Bend the clamp arms back into place, and use long-nose vise grips to hold it together while you screw in the clamp bolt. Replace the cover and plug in the FPR. Make sure it turns on.
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Installing the new filter
Before you install the new filter, place a pan under the old filter to catch any fuel. Then, follow these steps:
- Place the new filter into the clamp.
- Bend the clamp arms back into place.
- Use long-nose vise grips to hold the clamp together while you screw in the clamp bolt.
- Replace the cover.
- Plug in the FPR and make sure it turns on.
- Reattach the fuel lines.
- Use pliers to tighten the hose clamps attached to the fuel filter.
- Use a screwdriver to slide the fuel lines back on.
Note: These instructions apply to the NB series (1999-2005) Miatas, but should act as general guidelines.
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Reattaching the cover
To reattach the cover, you will need to use a cross-tip screwdriver to replace the five plastic screw clamps that attach the cover. You should have noted the position of the cover when you removed it, so that you can easily reattach it. You will also need a knife or something with a blade to pry out the plastic cover screws.
Once the cover is back in place, you can plug in the FPR and make sure it turns on.
If you are replacing the fuel filter in a Mazda Miata, you will also need to remove the fuel cap to remove pressure from the fuel line. Start the engine and remove the cover from the steering column. Remove the fuel pump relay fuse under the dash near the steering column.
The fuel filter is in the middle, forward of the rear passenger-side wheel, and towards the centre. You can easily remove the plastic cover by following the instructions outlined in the Miata.net article.
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Frequently asked questions
The fuel filter in the NA Miata is located in the middle, forward of the rear passenger-side wheel, and towards the centre. To replace it, you will need to remove the plastic cover, which is attached with 5 plastic screw clamps. You can then remove the bolt that secures the clamp holding the fuel filter to the car. Loosen the hose clamps attached to the fuel filter and slide the fuel lines off. Place the new filter into the clamp and bend the clamp arms back into place.
You will need a 10mm wrench for opening the filter retaining clamp, a cross-tip screwdriver, pliers, a knife or something with a blade to pry out the plastic cover screws, and a pan to catch any fuel.
Before sliding the fuel lines off the filter, clamp the rubber fuel lines with vise grips to prevent fuel from leaking.
Use a cross-tip screwdriver to remove the 5 plastic screw clamps part way, then gently pull them out. Note the position of the cover so you can easily reattach it.
The fuel filter for the NA Miata is located in the middle, forward of the rear passenger-side wheel, and towards the centre. It is secured to the car with a clamp and has hose clamps and fuel lines attached to it.











































