OEM 2008 Buick Lucerne Air Inject Check Valve

2008 Buick Lucerne Air Inject Check Valve Parts and Q&A

• Q: How to replace the secondary air inject check valve on 2008 Buick Lucerne?

  A: The first step for changing the secondary air injection shutoff includes taking out the air cleaner outlet duct. The Brake Booster Vacuum Hose needs to be disconnected from the Intake Manifold before relocating it out of reach. The next task requires the removal of the engine harness electrical connector from the secondary air injection shutoff and check valve. Lift the vehicle before removing the bolts that secure the Intake Manifold cover bracket and subsequently removing the bracket itself. Jeep owners must lower their vehicle first while they remove the nuts that attach the air shutoff and check valve pipe to exhaust manifold. Detach the air feed tube bracket nut which is mounted on the throttle body stud before disconnecting the air feed tube quick connect fitting from the air shutoff and check valve assembly. Place the air feed tube on the throttle body stud but keep it in a different position. First install the upper bolts on the bracket of the air shutoff and check valve then proceed to remove both components from their positions. The technicians should discard the air shutoff and check valve to exhaust manifold gasket after cleaning both gasket sealing surfaces. New installation requires users to place a fresh air shutoff and check valve gasket on exhaust manifold studs before mounting the air shutoff and check valve . Fasten the air shutoff and check valve to bracket upper bolts while tightening them to 25 n.m (18 lb ft). Mount the air feed tube onto the throttle body stud before proceeding to connect the quick connect fitting of the air feed tube to the air shutoff and check valve assembly. The air feed tube bracket nut should be installed onto the throttle body stud then tightened to 10 n.m (89 lb in). Pontiac sunbird 1999 requires applicants to install the air shutoff and check valve pipe to exhaust manifold nuts at a torque of exactly 10 n.m (89 lb in). Connect the Intake Manifold cover bracket together with its bolts while torquing these fasteners to 30 n.m (22 lb ft). After lowering the vehicle the technician returns the engine harness electrical connector to the air shutoff and places the Brake Booster Vacuum Hose at its designated spot on the Intake Manifold before completing the installation with the air cleaner outlet duct.