Exhaust Manifold Description
A single four-port, rear-takedown manifold is used with this engine. The manifold is designed to direct escaping exhaust gases out of the combustion chambers with a minimum of back pressure. The oxygen sensor is mounted to the exhaust manifold.
Muffler Description
If holes, open seams or any deterioration is discovered upon inspection of the front muffler and pipe assembly, the complete assembly should be replaced. The same procedure is applicable to the rear muffler assembly.
Heat shields in the front and the rear muffler assembly positions, as well as for the catalytic converter and the connecting pipe, protect the vehicle and the environment from high temperatures the exhaust system develops.
Catalytic Converters Description
| CAUTION | The catalytic converter requires the use of unleaded fuel only or damage to the catalyst will result. |
The catalytic converters are emission control devices added to the exhaust system to reduce pollutants from the exhaust pipes.
The three-way catalyst has coatings which contain palladium, platinum and rhodium, which simultaneously lower the levels of HC, CO and NOx.
Scheme 1
Scheme 2
Scheme 3
Scheme 4
- Disconnect the negative battery cable.
- Disconnect the Heated Oxygen (HO2) sensor connector, if equipped.
- Remove the exhaust manifold heat shield bolts.
- Remove the exhaust manifold heat shield.
- Remove the exhaust flex pipe retaining nuts from the exhaust manifold studs.
- Remove the exhaust manifold retaining nuts in the sequence shown.
- Remove the exhaust manifold.
- Remove the exhaust manifold gasket.
- Clean the sealing surfaces of the exhaust manifold and the cylinder head.