OEM Chevrolet Metro Exhaust Manifold

Chevrolet Metro Exhaust Manifold Parts and Q&A

• Exhaust Manifold
  91176019
  Q: How to service the exhaust manifold on Chevrolet Metro?

  A:

  Service of the Exhaust Manifold requires both cool exhaust system temperature prevention and negative Battery Cable disconnection. Raise and support the vehicle. A successful pup Catalytic Converter removal requires first removing the lower Exhaust Pipe by taking out its four bolts to split it away from the Exhaust Manifold and then detaching the Exhaust Manifold stiffener bracket. The service starts with disconnecting the oxygen sensor electric connector followed by unboltage of three bolts to detach the Exhaust Manifold heat shield from the rest of the system. The removal process of low side a/c line bracket demands careful handling of the a/c lines while the procedure continues. Extract the eight bolts joined with one nut from the Exhaust Manifold before pulling out the Exhaust Manifold together with the Exhaust Manifold Gasket from the Cylinder Head. Installation without a pup Catalytic Converter requires removal of the two bolts and front pipe/catalytic converter assembly from the Exhaust Manifold . Post that lower the vehicle and disconnect the oxygen sensor electric connector followed by removal of the four bolts and the Exhaust Manifold heat shield . To perform the replacement begin by separating the low side a/c line bracket and realigning the a/c lines. Then remove the five bolts and three nuts from the Exhaust Manifold followed by installation of the Exhaust Manifold and Exhaust Manifold Gasket onto the Cylinder Head. When using a pup Catalytic Converter for installation you must first apply the new Exhaust Manifold Gasket to the Cylinder Head surface before installing the Exhaust Manifold at eight points with one nut while tightening it to 32 nm (24 ft.lbs. Torque). The Exhaust Manifold heat shield needs installation and you should tighten its three bolts to 15 nm (11 ft. Lbs.). Place the low side a/c line bracket while tormenting its bolt to 15 nm (11 ft. Lbs.) torque. Support the vehicle's elevation then fasten the Exhaust Manifold stiffener bracket with two bolts at 50 nm (37 ft. Lbs.) torque. The front pipe assembly must be installed onto the Exhaust Manifold with a fresh seal using four bolts which should reach a torque of 50 nm (37 ft. Lbs.). Vehicle height should be lowered before connecting the oxygen sensor electrical connector and reconnecting the negative Battery Cable and conducting an exhaust gas leakage test. When using a pup Catalytic Converter is not possible, first fit the new Exhaust Manifold Gasket onto the Cylinder Head then attach the Exhaust Manifold while tightening five bolts and three nuts to 23 nm (17 ft. Lbs.). Fasten the Exhaust Manifold heat shield in position using four bolts which should be tightened to 15 nm (11 ft. Lbs.). Use one bolt to reinstall the low side a/c line bracket while tightening it to 15 nm (11 ft. Lbs.). Raise and support the vehicle before installing the front pipe/catalytic converter assembly to the Exhaust Manifold using new seals and securing the two bolts to 50 nm (37 ft. Lbs.). Lower the vehicle, connect the oxygen sensor electrical connector, reconnect the negative Battery Cable and perform exhaust gas leakage inspection.