Exhaust System: Service and Repair

^ Always replace exhaust gaskets with new ones when reassembling.
^ If gasket remains on flange surface, scrape off completely as shown.
^ With engine running, check all tube connections for exhaust gas leaks, and entire system for unusual noises.
^ Ensure that mounting brackets and mounting insulators are installed properly and free from undue stress. Improper installation could result in excessive noise or vibration.
^ Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 inch) onto a hard surface such as a concrete floor.