Emission System: Removal & Installation Mazda 3 BK

Type A Removal

Note. The evaporative hose can be removed by pushing it to the joint port side to release the lock.

Scheme 41

Scheme 42

1. Rotate the release tab on the quick release connector to the stopper position.
2. Pull out the evaporative hose straight from the joint port and disconnect it.
3. Cover the disconnected quick release connector and joint port with vinyl sheeting or a similar material to prevent it from scratches or dirt.

Type B Removal

Note. For the quick release connector of front side of the fuel tank, use the SST. For other quick release connectors, do not use the SST because it cannot access the quick release connectors easily.

Scheme 43

1. Insert the SST into the quick release connector.
2. Pull out the evaporative hose straight from the joint port and disconnect it.
3. Cover the disconnected quick release connector and joint port with vinyl sheeting or a similar material to prevent it from becoming scratched or dirty.

Type A Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose. A checker tab is integrated with the quick release connector for new evaporative hoses. Remove the checker tab from the quick release connector after the connector is completely engaged with the joint port.

Scheme 44

1. Inspect the evaporative hose and joint port sealing surface for damage and deformation. If there is any malfunction, replace it with a new one.
2. Apply a small amount of clean engine oil to the sealing surface of the joint port.
3. Reconnect the evaporative hose straight to the joint port until a click is heard. NOTE: If the quick release connector does not move at all, disconnect it, verify that the O-ring is not damaged or has not slipped, and then reconnect the quick release connector.
4. Lightly pull and push the quick release connector a few times by hand, and then verify that it can move 2.0-3.0 mm {0.08-0.12 in} and is connected securely.

Type B Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose. A checker tab is integrated with the quick release connector for new evaporative hoses. Remove the checker tab from the quick release connector after the connector is completely engaged with the joint port.

Type C Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose.

1. Inspect the evaporative hose and joint port sealing surface for damage and deformation. If there is any malfunction, replace it with a new one.
2. When disconnecting and reconnecting the quick release connector, verify if the metal reinforcement pipe protrudes from the plastic pipe end while pressing the end with a finger. If the metal pipe protrudes from the resin pipe, insert it flush with the end of the resin pipe.
3. Insert the joint port straight to the end of the quick release connector.
4. Push down the retainer using a finger. If the retainer cannot be pushed down, push the joint port further to the quick release connector.
5. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected securely.

Type D Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose.

1. Inspect the evaporative hose and joint port sealing surface for damage and deformation. If there is any malfunction, replace it with a new one.
2. Apply a small amount of clean engine oil to the sealing surface of the joint port.
3. Reconnect the evaporative hose straight to the joint port until a click is heard. NOTE: If the quick release connector does not move at all, disconnect it, verify that the O-ring is not damaged or has not slipped, and then reconnect the quick release connector.
4. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected securely.

Type E Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose.

1. Inspect the evaporative hose and joint port sealing surface for damage and deformation. If there is any malfunction, replace it with a new one.
2. Apply a small amount of clean engine oil to the sealing surface of the joint port.
3. Reconnect the evaporative hose straight to the joint port until a click is heard. NOTE: If the quick release connector does not move at all, disconnect it, verify that the O-ring is not damaged or has not slipped, and then reconnect the quick release connector.
4. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected securely.

ROLLOVER VALVE REMOVAL/INSTALLATION

Note. Except for the California emission regulation applicable model, the rollover valve cannot be removed as it is welded on the upper surface of the fuel tank. For the California emission regulation applicable model, the rollover valve cannot be removed as it is built into the fuel tank.

FUEL SHUT-OFF VALVE REMOVAL/INSTALLATION

Note. Except for the California emission regulation applicable model, the fuel shut-off valve cannot be removed as it is welded on the upper surface of the fuel tank. For the California emission regulation applicable model, the fuel shut-off valve cannot be removed as it is built into the fuel tank.

Water Hose Removal Note

1. Drain the engine coolant from the radiator. (See ENGINE COOLANT REPLACEMENT .)

EGR Valve Removal Note

1. Remove the air cleaner and air hose. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [LF]»(ref-177563-S27802206012005060200000) , «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-177563-S01004479692005060200000) .)
2. Remove the radiator hose (upper). (See «RADIATOR REMOVAL/INSTALLATION»(ref-177562-S08623934542005060200000) .)