Emission System: Overview Mazda 3 BK

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1. Perform the following SST (Evaporative Emission System Tester 134-01049) self-test: NOTE: If the tester does not work correctly during self-test, refer to the tester operators manual for more detailed procedures. Verify the gas cylinder valve is closed and the control valve located on the tester is in the TEST position. All tester display should be off at this time. Connect the long hose (part of SST ) to the tester. Connect the manifold assembly (part of SST ) to the long hose as shown. Open the gas cylinder valve and verify the gas cylinder regulator left gauge reads 10 to 12 psi (preset at factory). If not, refer to the tester operators manual to contact tester manufacturer. Press the ON/OFF switch to turn on the SST and make sure the left display reads 0.0. Turn the control valve on the tester to the FILL position. Verify the left display reading is within 13.9 to 14.0 in of water. If not, adjust the pressure using the regulator knob located on the right side of the tester. Turn the control valve to TEST position and press the START switch. After the 2-min countdown (left display) is completed, the right display shows the total pressure loss for that period. A 0.5 in of water loss is acceptable on the self-test. If the loss is more than 0.5 in of water, do one or more self-test. If the failed test repeats, check for leak using the ultrasonic leak detector (part of SST ).
2. Press the RESET switch to set the left display reading to 0.0.
3. Connect the fuel cap receiver assembly (part of SST ) to the manifold assembly and fuel-filler cap from the vehicle. If the fuel-filler cap is not a genuine part, replace it.
4. Turn the control valve to the FILL position.
5. Wait ( maximum 20 s ) until the left display reads 13.9 to 14 in of water. If the reading is slightly below, adjust it using the regulator knob. If the reading is far below, the fuel-filler cap has leak. Replace it.
6. Turn the control valve to the TEST position and press the START switch.
7. After the 2-min countdown (left display) is completed, check the test result (the failed/passed light on the tester). If the green light turns on, the fuel-filler cap is OK. If the red light turns on, the fuel-filler cap has leakage. Replace it.
8. Close the gas cylinder valve.
9. Turn the control valve to the FILL position.
10. Press the ON/OFF switch to turn off the tester.

Scheme 9

1. Remove the air filter. (See «AIR FILTER REMOVAL/INSTALLATION»(ref-177566-S32351899332005060200000) .)
2. Blow from port A and verify that there is airflow from port B. If not as specified, replace the air filter.
3. Blow from port B and verify that there is airflow form port A. If not as specified, replace the air filter. (See «AIR FILTER REMOVAL/INSTALLATION»(ref-177566-S32351899332005060200000) .)

Scheme 10

1. Remove the rear tire (RH).
2. Remove the rear mudguard (RH).
3. Support the rear crossmember using a transmission jack.
4. Remove the rear shock absorber (RH) lower bolts. (See REAR SHOCK ABSORBER REMOVAL/INSTALLATION .)
5. Loosen the rear crossmember installation nuts (6 locations) and lower the rear crossmember 30 mm {1.2 in}. (See REAR CROSSMEMBER REMOVAL/INSTALLATION .)
6. Remove the fuel-filler cap.
7. Remove the Air filter.
8. Install in the reverse order of removal.

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1. Remove the charcoal canister protector.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
4. Verify that the rear wheel alignment is within the specification. (See REAR WHEEL ALIGNMENT .)

Scheme 14

1. Support the rear crossmember using a transmission jack.
2. Remove the rear wheels.
3. Disconnect the ABS wheel-speed sensor wiring harness connector.
4. Disengage the brake pipe mount from bracket.
5. Remove the rear shock absorber lower bolts. (See REAR SHOCK ABSORBER REMOVAL/INSTALLATION .)
6. Loosen the rear crossmember installation nuts (6 locations) and lower the rear crossmember approx. 140 mm {5.5 in}. (See REAR CROSSMEMBER REMOVAL/INSTALLATION .)
7. Disconnect the breather hose.
8. Remove the installation bolts and remove the charcoal canister.

Scheme 15

1. Fit the charcoal canister into the stay.
2. Install the breather hose and clamp as shown in the figure.

Scheme 16

1. Remove the charcoal canister. (See «CHARCOAL CANISTER REMOVAL/INSTALLATION»(ref-177566-S13528247522005060200000) .)
2. Plug the EVAP leak detection pump side and purge solenoid valve side of the charcoal canister.
3. Inspect for air leakage when blowing air by mouth from the fuel tank side. If air leaks, replace the charcoal canister. (See «CHARCOAL CANISTER REMOVAL/INSTALLATION»(ref-177566-S13528247522005060200000) .)

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1. Remove the charcoal canister protector.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
4. Verify that the rear wheel alignment is within the specification. (See REAR WHEEL ALIGNMENT .)

Scheme 20

1. Support the rear crossmember using a transmission jack.
2. Remove the rear wheels.
3. Disconnect the ABS wheel-speed sensor wiring harness connector.
4. Disengage the brake pipe mount from bracket.
5. Remove the rear shock absorber lower bolts. (See REAR SHOCK ABSORBER REMOVAL/INSTALLATION .)
6. Loosen the rear crossmember installation nuts (6 locations) and lower the rear crossmember approx. 140 mm {5.5 in} . (See REAR CROSSMEMBER REMOVAL/INSTALLATION .)
7. Disconnect the breather hose.
8. Remove the installation bolt and remove the EVAP system leak detection pump.

Scheme 21

1. Install the breather hose and clamp as shown in the figure.