Sylvie Willis
The Mazda Miata is one of the best-selling roadsters of all time, with one of its most attractive features being how easy it is to work on. This is evident when it comes to replacing the fuel filter. To replace the fuel filter on a 2004 Mazda Miata, you'll need to locate the fuel filter in the middle, in front of the rear passenger-side wheel, towards the centre of the car. You'll then need to remove the plastic cover, loosen the clamp, and detach the old retainer clip. Once you've done this, you can place the new filter into the clamp, bend the clamp arms back into place, and screw in the clamp bolt.
| Characteristics | Values |
|---|---|
| Location of fuel filter | Middle, in front of the rear passenger-side wheel, toward the centre of the car |
| Tools required | Cross-tip screwdriver, 10 mm (13/32-inch) socket, pliers, pinch-nose pliers, long-nose vise grips |
| Steps | 1. Remove fuel cap to relieve pressure from the fuel line. 2. Remove the cover from the steering column. 3. Remove the fuel pump relay fuse under the dash near the steering column. 4. Remove the Miata fuel filter cover. 5. Place a pan under the filter to catch fuel. 6. Remove the bolt that secures the clamp holding the fuel filter. 7. Loosen the hose clamps attached to the fuel filter. 8. Slide the fuel lines off. 9. Clamp the rubber fuel lines with vise grips to prevent fuel from leaking. 10. Place the new filter into the clamp and bend the clamp arms back into place. 11. Screw in the clamp bolt. 12. Replace the cover and plug in the FPR. |
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What You'll Learn
Locating the fuel filter
To locate the fuel filter on a 2004 Mazda Miata, you will need to position yourself under the rear bumper. The fuel filter is located towards the middle, in front of the rear passenger-side wheel, towards the centre of the car. Once you have located the fuel filter, you will need to remove the plastic cover, which is attached with five plastic screw clamps. Use a cross-tip screwdriver to remove them partway, and then gently pull them out. Be sure to note the position of the cover so that you can easily reattach it later.
Before you begin working on the fuel filter, it is important to take some safety precautions. Place the rear of the Miata onto ramps and put chocks under the front wheels in both directions to prevent the car from moving. Remove the fuel cap to relieve 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.
Once you have accessed the fuel filter, you will need to use a 10 mm (13/32-inch) socket to remove the bolt that secures the clamp holding the fuel filter to the car. Use pliers to loosen the hose clamps attached to the fuel filter. Be careful not to damage the metal parts of the lines. Plug the line with a pen or golf tee after you remove the rubber hoses if needed.
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Removing the fuel filter cover
To remove the fuel filter cover of a 2004 Mazda Miata, you'll need to locate the fuel filter first. It's towards the middle, in front of the rear passenger-side wheel, and towards the centre of the car. Position yourself under the rear bumper to find it.
The fuel filter cover is attached with five plastic screw clamps. Use a cross-tip screwdriver to remove them partway, then gently pull them out. Make sure you note the position of the cover so you can easily reattach it later. Place a pan under the filter to catch any fuel.
Now you can use a 10mm (13/32-inch) socket to remove the bolt that secures the clamp holding the fuel filter to the car. Use pliers to loosen the hose clamps attached to the fuel filter.
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Removing the fuel filter
To remove the fuel filter from a 2004 Mazda Miata, first locate the filter under the rear bumper, towards the middle, in front of the rear passenger-side wheel, and towards the centre of the car. Place the rear of the Miata on ramps and put chocks under the front wheels to prevent the car from moving. Remove the fuel cap to relieve 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.
Now, locate the Miata fuel filter cover, which is attached with five 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. Use a 10mm (13/32-inch) socket to remove the bolt that secures the clamp holding the fuel filter to the car.
Use pliers to loosen the hose clamps attached to the fuel filter. Clamp the rubber fuel lines with vise grips to prevent fuel from leaking before you slide the lines off the filter. Don't clamp the metal parts of the lines to avoid damage. Alternatively, plug the line with a pen or golf tee after you remove the rubber hoses. Use a screwdriver to slide the fuel lines off.
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Installing the new fuel filter
To install the new fuel filter, you will need to place the new filter into the clamp, bending the clamp arms back into place. 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.
Before you begin, you will 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.
You will also need to place a pan under the filter to catch any fuel. Use a 10 mm (13/32-inch) socket to remove the bolt that secures the clamp holding the fuel filter to the car. Use pliers to loosen the hose clamps attached to the fuel filter.
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. Don't clamp the metal parts of the lines to avoid damage. Alternatively, plug the line with a pen or golf tee after you remove the rubber hoses.
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Reattaching the cover
Once you have replaced the fuel filter, you can reattach the cover. The cover is attached with five plastic screw clamps, so you will need to use a cross-tip screwdriver to reattach it. Make sure you have noted the position of the cover so that you can easily reattach it.
Before you reattach the cover, make sure that you have replaced the exit hose and attached it to the new filter. You can then 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.
Once the clamp bolt is in place, you can replace the cover and plug in the FPR. Make sure that the FPR turns on.
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Frequently asked questions
The fuel filter is located under the rear bumper, towards the middle, in front of the rear passenger-side wheel, and towards the centre of the car.
The fuel filter cover is attached with five plastic screw clamps. Use a cross-tip screwdriver to remove them partway, then gently pull them out.
Use a 10mm (13/32-inch) socket to remove the bolt that secures the clamp holding the fuel filter to the car. Then, use pliers to loosen the hose clamps attached to the fuel 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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