The exhaust system is designed to be maintenance free, but regular inspection is warranted due to harsh operating condition. The only scheduled maintenance is replacement of the oxygen sensor at specified time and mileage intervals.

This section covers maintenance, troubleshooting, and repair of the exhaust system. For information on testing the oxygen sensor, see 240 Fuel Injection.

' To avoid injury, wear eye protection and heavy gloves when working on rusty parts of an old exhaust system.

• Do not use flammable workshop chemicals near a hot catalytic converter. They may ignite.

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