Emission System: Removal & Installation Mazda Tribute II

EXHAUST GAS RECIRCULATION (EGR) VALVE REMOVAL/INSTALLATION - 3.0L

1. Disconnect the EGR valve electrical connector.
2. Disconnect the exhaust manifold-to-EGR valve tube fitting from the EGR valve. To install, tighten to 40 N.m {4.1 kgf.m, 30 ft.lbf}.
3. Remove the 2 bolts and the EGR valve. To install, tighten to 25 N.m {2.5 kgf.m, 18 ft.lbf}.
4. Remove and discard the EGR valve gasket. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to remove all traces of the exhaust gas recirculation (EGR) valve gasket. NOTE: If there is no residual gasket material present, metal surface prep can be used to clean and prepare the surfaces. NOTE: Do not reuse the exhaust gas recirculation (EGR) valve gasket.
5. To install, reverse the removal procedure.

EXHAUST MANIFOLD TO EXHAUST GAS RECIRCULATION (EGR) VALVE TUBE REMOVAL/INSTALLATION - 3.0L

1. Disconnect the exhaust manifold-to-EGR tube fitting from the EGR valve. To install, tighten to 40 N.m {4.1 kgf.m, 30 ft.lbf}.
2. Disconnect the exhaust manifold-to-EGR tube fitting from the RH catalytic convertor. To install, tighten to 40 N.m {4.1 kgf.m, 30 ft.lbf}.
3. Remove the exhaust manifold-to-EGR valve tube.
4. To install, reverse the removal procedure.

Scheme 1

1. Remove the intake manifold. See «INTAKE MANIFOLD REMOVAL/INSTALLATION - 2.5L»(ref-348655-S27678094552009112700000)
2. Release the coolant bypass hose from the clip.
3. Remove the 8 bolts, the crankcase vent oil separator and gasket. To install, tighten to 10 N.m {1.0 kgf.m, 89 in.lbf}.
4. To install, reverse the removal procedure. Clean and inspect the sealing surfaces.

Scheme 2

1. Disconnect the PCV valve electrical connector.
2. Release the clamp and disconnect the crankcase ventilation tube from the PCV valve.
3. Rotate the PCV valve counterclockwise and remove it from the valve cover. Discard the PCV valve. CAUTION: A new positive crankcase ventilation (PCV) valve must be installed if removed from the valve cover. Damage will occur to the locking mechanism on the PCV valve upon removal. NOTE: To install, apply clean engine oil to the O-ring seal. NOTE: When installing, make sure the PCV valve electrical connector is pointing in the correct position to allow the wiring harness to be connected. Incorrect installation would require removal and replacement of the valve.
4. To install, reverse the removal procedure. Install a new PCV valve.

Scheme 3

1. With the vehicle in NEUTRAL, position it on a hoist. See «LIFTING»(ref-348626-S31954056142009112700000).
2. Disconnect the battery ground cable.
3. Disconnect the evaporative emissions (EVAP) canister electrical connector.
4. Disconnect the fresh air tube from the EVAP canister
5. Disconnect the fuel vapor tube assembly-to-EVAP canister fuel vapor tube quick connect coupling. See «QUICK RELEASE COUPLING - DOUBLE LOCKING»(ref-348657-S25485916692009112700000).
6. Disconnect the EVAP canister purge tube-to-fuel vapor tube quick connect coupling. See «QUICK RELEASE COUPLING - DOUBLE LOCKING»(ref-348657-S25485916692009112700000).
7. Remove the 2 nuts, 2 bolts and the EVAP canister assembly. To install, tighten to 7 N.m {0.7 kgf.m, 62 in.lbf}.
8. To install, reverse the removal procedure. Carry out a leak test. See «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/mazda/tribute/ii-2007-2011/remont/testing-diagnostics/#symptom-troubleshooting-engine-25l-30l) . Carry out the evaporative emissions repair verification drive cycle. See «EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE»(/mazda/tribute/ii-2007-2011/remont/testing-diagnostics/#symptom-troubleshooting-engine-25l-30l) .

Scheme 4

1. Disconnect the battery ground cable.
2. Disconnect the Evaporative Emission (EVAP) canister purge valve electrical connector.
3. Disconnect the 2 fuel vapor tube-to-EVAP canister purge valve quick connect couplings. See «QUICK RELEASE COUPLING - DOUBLE LOCKING»(ref-348657-S25485916692009112700000).
4. Remove the 2 bolts and the EVAP canister purge valve. To install, tighten to 6 N.m {0.6 kgf.m, 52 in.lbf}.
5. To install, reverse the removal procedure. Carry out the evaporative emission system leak test. See «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/mazda/tribute/ii-2007-2011/remont/testing-diagnostics/#symptom-troubleshooting-engine-25l-30l) .

Scheme 5

1. Remove the evaporative emission (EVAP) canister assembly. See «EVAPORATIVE EMISSIONS CANISTER REMOVAL/INSTALLATION»(ref-348631-S41756614032009112700000).
2. Disconnect the EVAP canister vent solenoid electrical connector, release the pin-type retainer and remove the EVAP canister wire harness.
3. Remove the 3 EVAP canister tray bolts. To install, tighten to 5 Nm (0.5 kgf.m, 44 in.lbf}.
4. Disconnect the EVAP canister purge tube-to-EVAP canister quick connect coupling.
5. Disconnect the EVAP canister fuel vapor tube-to-EVAP canister quick connect coupling.
6. Remove the EVAP canister from the tray.
7. Depress the locking tab outward, rotate the EVAP canister vent solenoid clockwise and remove it from the EVAP canister. Apply clean engine oil to the EVAP
8. To install, reverse the removal procedure. Carry out the evaporative emissions system leak test. See «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/mazda/tribute/ii-2007-2011/remont/testing-diagnostics/#symptom-troubleshooting-engine-25l-30l) . Carry out the evaporative emissions repair verification drive cycle. See «EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE»(/mazda/tribute/ii-2007-2011/remont/testing-diagnostics/#symptom-troubleshooting-engine-25l-30l) .

Scheme 6

Scheme 7

1. With the vehicle in NEUTRAL, position it on a hoist. See «LIFTING»(ref-348626-S31954056142009112700000).
2. Disconnect the battery ground cable.
3. Position a suitable lifting device under the fuel tank.
4. Remove the LH fuel tank bolt and strap. To install, tighten to 55 N.m {5.6 kgf.m, 41 ft.lbf}.
5. Partially lower the LH side of the fuel tank enough to access the fuel vapor tube assembly.
6. Disconnect the fuel tank pressure (FTP) sensor electrical connector.
7. Disconnect the fuel vapor tube assembly-to-fuel tank quick connect coupling. See «QUICK RELEASE COUPLING - DOUBLE LOCKING»(ref-348657-S25485916692009112700000).
8. Disconnect the fuel vapor tube assembly-to-evaporative emission (EVAP) canister quick connect coupling. See «QUICK RELEASE COUPLING - DOUBLE LOCKING»(ref-348657-S25485916692009112700000).
9. Remove the fuel vapor tube assembly.
10. To install, reverse the removal procedure. Carry out a leak test. See «EVAPORATIVE EMISSION SYSTEM LEAK TEST»(/mazda/tribute/ii-2007-2011/remont/testing-diagnostics/#symptom-troubleshooting-engine-25l-30l) . Carry out the evaporative emission repair verification drive cycle. See «EVAPORATIVE EMISSION REPAIR VERIFICATION DRIVE CYCLE»(/mazda/tribute/ii-2007-2011/remont/testing-diagnostics/#symptom-troubleshooting-engine-25l-30l) .

See also:
• EVAPORATIVE EMISSION SYSTEM LEAK TEST