Introduction

Does your 1993 Nissan 300zx feel down on power? Have you recently cleaned or replaced your air filter? If you answered yes, then no, go ahead and follow this guide to clean your air filter and get your engine breathing better.

Image 1/2: Using the 10mm socket, remove the 4 bolts. Don't lose them! Image 2/2: While lifting up slightly on the panel, pull/push it towards the engine.
  • Start by removing the center nose panel which is located between the head lights.

  • Using the 10mm socket, remove the 4 bolts. Don't lose them!

  • While lifting up slightly on the panel, pull/push it towards the engine.

    • The panel should "pop" out of place. Once removed, place it out of the way.

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Image 1/3: Before disconnecting the sensor, you must first pop the metal clip holding the connector in place. Image 2/3: Using a pointy object (a nail or screw will work fine), push the edge of the metal wire clip away from the center of the connector. Image 3/3: Now you may remove the connector.
  • Next, locate the connector for the mass airflow sensor.

  • Before disconnecting the sensor, you must first pop the metal clip holding the connector in place.

  • Using a pointy object (a nail or screw will work fine), push the edge of the metal wire clip away from the center of the connector.

  • Now you may remove the connector.

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Image 1/2: Use a phillips head screwdriver to remove these screws. Image 2/2: Loosen the bolt that clamps the air hose to the air box. Loosen the bolt until the clamp slides freely along the hose.
  • Locate and remove the three screws holding the air box cover on.

    • Use a phillips head screwdriver to remove these screws.

  • Loosen the bolt that clamps the air hose to the air box. Loosen the bolt until the clamp slides freely along the hose.

    • Use a phillips head screwdriver for this bolt as well.

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Image 1/3: Using a flat head screwdriver, pop the clips up. Image 2/3: Once the clips have been popped up, flip the clips up so that they lie on top of the air box cover. Image 3/3: Once the clips have been popped up, flip the clips up so that they lie on top of the air box cover.
  • Locate the 4 clips holding down the air box cover. There are 2 on each side.

    • Using a flat head screwdriver, pop the clips up.

  • Once the clips have been popped up, flip the clips up so that they lie on top of the air box cover.

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Image 1/3: Use the flat head screwdriver to push off the air hose while you move the air box cover out and down. Image 2/3: The air box cover is now ready to be removed. Image 3/3: Wiggle the air box cover around while lifting up on it until it is completely removed.
  • It is time to remove the air box cover. Slide a flat head screwdriver in between the air hose and where it attaches to the the air box cover.

    • Use the flat head screwdriver to push off the air hose while you move the air box cover out and down.

  • The air box cover is now ready to be removed.

    • Wiggle the air box cover around while lifting up on it until it is completely removed.

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Image 1/3: If the rubber seals around the filters are old, they might stick a little to the air box, but they will still pull out. Image 2/3: Once the air filters are removed, blow them out with compressed air. Image 3/3: If you do not have access to compressed air, you can tap a lot of the dust out of the air filter just by tapping the air filter on your palm.
  • The air filters are now able to be removed. Simply pull them out from where they sit.

    • If the rubber seals around the filters are old, they might stick a little to the air box, but they will still pull out.

  • Once the air filters are removed, blow them out with compressed air.

  • If you do not have access to compressed air, you can tap a lot of the dust out of the air filter just by tapping the air filter on your palm.

    • The dust will be collected on the side of the air filter that faces away from you when the air filters are in the car.

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Conclusion

To reassemble your car, follow these instructions in reverse order.

4 other people completed this guide.

Ford Eimon

Member since: 02/24/2015

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Cal Poly, Team 24-4, Green Winter 2015 Member of Cal Poly, Team 24-4, Green Winter 2015

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One Comment

Hey great page!

I have a 92 300zx same color. I bought two OEM K&N filters to replace my old ones. Since I've only had the car a month I've been doing some Preventative Maintenance. I had the timing belt done two weeks ago. next was the filters, then the spark plugs, etc. But without out these instructions, I might have not done this job so quickly. Start to finish it took about a half hour, with very llittle help from my buddy. This was an older couple who were the only owners of this car. Had 90% of the work and maintenance by the dealer. The car is totally stock except it's missing the Bose cover in the interior. So the air filters had a Nissan brand and part number on them. It just doesn't look like they've been changed for 10 years. They were Extremely Dirty. Which seems odd because everything is practically new in the engine area. So next is spark plugs, fuel filter, then Oil change.

Sorry for rambling! I like to brag about my ride ;-)

Earl - Reply

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