Exhaust System

CAUTION:
- Always replace exhaust gaskets with new ones when reassembling. If gasket is left on range surface, scrape off completely as shown at left.
- With engine running, check all tube connections for exhaust gas leaks and entire system for unusual noises.
- Check to ensure that mounting brackets and mounting insulators are installed properly free from undue stress. Improper installation could result in excessive noise or vibration.
- For removal and installation of rear heated oxygen sensor, refer to "TROUBLE DIAGNOSIS FOR DTC P0136 and P0156". Testing and Inspection
- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.