MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
Evaporative Canister Filter: Testing and Inspection
AIR FILTER INSPECTION
1. Remove the air filter.
2. Blow from port A and verify that there is airflow from port B.
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If not as specified, replace the air filter.
3. Blow from port B and verify that there is airflow from port A.
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If not as specified, replace the air filter.