Mazda 323/626/929/GLC/MX-6/RX-7 1978-1989

Air Cleaner

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The air cleaner uses a disposable paper element on carbureted, diesel and fuel injected engines. The air filter should be replaced at least every two years or 24,000-30,000 miles (38,647-48,309 km). If the car is driven in a dry and dusty climate, clean or replace the air filter twice as often. Inspect the air cleaner element for accumulations of dirt and oil and wipe the air cleaner housing with a clean, lint-free rag. Replace the element as necessary.

If the engine is equipped with a carburetor, the air filter may be cleaned by blowing low pressure air through the filter, outward from the center.

On fuel injected engines, do not attempt to clean the air filter with low pressure air.

REMOVAL & INSTALLATION



Filter Element

See Figures 1, 2, 3, 4, 5 and 6

Replacing the air cleaner element is a simple, routine maintenance operation. You should be careful, however, to keep dust and dirt out of the air cleaner housing, as they accelerate engine wear. If the outside of the air cleaner housing is dusty, wipe it with a clean, lint-free rag before beginning work.

On carburetor equipped engines, you typically have to remove only the top cover of the air cleaner. Remove the wingnut at the center of the housing and unfasten the three clips situated around the sides. Then, pull the top cover off and remove the air cleaner element. When installing the new element, make sure it seats squarely around the bulge in the center of the lower air cleaner housing. Install the housing top, turning it until the wingnut mounting stud lines up with the hole in the top (it's usually off center). Note that the top cover should seat tightly all around. Install the wingnut and fasten the clips.



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Fig. Fig. 1: On vehicles equipped with a carbureted engine, remove the nut on top of the air cleaner housing



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Fig. Fig. 2: Unlatch the clips around the perimeter of the air cleaner assembly

On fuel injected models, loosen the clamp on the air intake hose and pull the hose off the housing. Then, disconnect the airflow sensor electrical connector. Finally, unbolt and remove the housing. Note the direction in which the element is positioned and install the new element in the same way (it may be marked TOP ). Install the top of the housing in reverse order.



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Fig. Fig. 3: Remove the cover to expose the air cleaner element



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Fig. Fig. 4: Lift out the used air cleaner element



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Fig. Fig. 5: The air cleaner element of carburetor equipped vehicles may be cleaned with compressed air



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Fig. Fig. 6: A disposable breather element may also be found inside the air cleaner assembly

Air Cleaner Housing

See Figures 7, 8, 9, 10, 11 and 12

In order to access the carburetor/throttle body or other component(s) beneath the air cleaner assembly, it may be necessary to remove the entire air cleaner assembly. Disconnect all hoses and vacuum lines leading to the air cleaner assembly (it may be helpful to tag these lines for easier installation), and remove the necessary fasteners. Installation is the reverse of removal.



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Fig. Fig. 7: Disconnect the hose at the rocker arm cover



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Fig. Fig. 8: Disconnect the hoses at the reed valve assembly



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Fig. Fig. 9: Disconnect the vacuum line at the air cleaner's vacuum diaphragm



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Fig. Fig. 10: Remove the exterior bolts securing the air cleaner assembly



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Fig. Fig. 11: Remove any fasteners securing the assembly to the carburetor air horn, but be VERY CAREFUL not to drop them into the carburetor



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Fig. Fig. 12: After disconnecting/removing all hoses and fasteners, lift the air cleaner assembly from the engine

 
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