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Home >> Mazda >> 2011 >> 6 s Touring Plus >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System [MZI 3.7 V6] >> Knock Sensor (KS) Removal/Installation
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Knock Sensor (KS) Removal/Installation

NOTE:
  • Put a tray under the converter housing to receive the engine coolant.
  1. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI 3.7 V6] .)
  2. Perform the following procedure for easier access.
    1. Complete the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION .)
    2. Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION .)
    3. Remove the ventilation hose. (See QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION .)
    4. Remove the TP sensor connector. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
    5. Remove the vacuum hose (to purge solenoid valve). (See QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION .)
    6. Remove the vacuum hose (to master back). (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
    7. Remove the dynamic chamber. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
      Fig 1: Tray And Engine Coolant
      G07620774Courtesy of MAZDA MOTORS CORP.
    8. Remove the fuel hose. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION .)
    9. Remove the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION .)
    10. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  3. Remove in the order indicated in the table.
    INTAKE MANIFOLD REMOVAL REFERENCE CHART

    1 Water inlet pipe
    2 O-ring
    3 KS connector
    4 KS
    NOTE:
    • Lubricate the new O-ring with clean engine coolant for installation.
  4. Install in the reverse order of removal.
  5. Complete the "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION .)
Fig 2: Intake Manifold Removal Sequence
G07620775Courtesy of MAZDA MOTORS CORP.
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