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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 497 (Engine Mechanical [Intake-Air System]) >> Variable Tumble Control System (VTCS) Check Valve (One-Way), Delay Valve Inspection

Variable Tumble Control System (VTCS) Check Valve (One-Way), Delay Valve Inspection

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the VTCS check valve (one-way) or delay valve. (See VARIABLE TUMBLE CONTROL SYSTEM (VTCS) CHECK VALVE (ONE-WAY), DELAY VALVE REMOVAL/INSTALLATION .)
  2. Blow through A and verify that the air flows from B.
    Fig 1: Verify That Air Flows Through A From B
    G03637796Courtesy of MAZDA MOTORS CORP.
  3. Blow through B and verify that the air does not flow from A.
    • If not as specified, replace the VTCS check valve (one-way) or delay valve.
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