Component Tests and General Diagnostics

WARNING: Leaking exhaust systems are potentially hazardous to a vehicle's passengers because carbon monoxide is poisonous.

CAUTION: Do not touch the catalytic converter heat shield when the engine is running. The conversion process produces high heat Even when the engine is not running, it remains hot a long time. It will remain hot after other pipes have cooled. Touching the heat shield may produce a serious burn.

CAUTION: A hot exhaust system can produce a serious burn.

1. Raise vehicle with engine running.
2. Inspect front exhaust pipe for leaks.
3. Inspect catalytic converter for leaks. Since catalytic converter is covered by heat shield, visual inspection will not be effective Listening for leaks will be more productive.
4. Inspect pre-silencer for leaks. Pipe joining catalytic converter and pre-silencer also has a heat shield. Listening for leaks is the best method.
5. Inspect main-silencer for leaks.
6. Turn engine OFF and let exhaust system cool.