Note. Use a new gasket when installing.
Models without turbocharger
Removing
1. Collectors are fastened with the same nuts.
2. To facilitate access, unscrew the mounting bolts and remove the reinforcing rod, where present, between the domes of the front suspension struts. Also jack up the front of the car and place it on axle stands. Where available, remove the lower engine cover.
3. Note the location of the wiring brackets or hoses on the manifolds, and remove them.
4. Loosen the mounting bracket and disconnect the intake duct from the intake manifold.
5. Where applicable, disconnect the hoses from the oil separator mounted on the intake manifold. If required, the oil separator can be unscrewed from the bracket.
6. Where applicable, disconnect the breather hoses from the intake manifold.
7. On models equipped with an exhaust gas recirculation system, remove the valve and tube as described in Part C of the current Chapter.
8. Separate a reception pipe from a final collector, address to the Section General description and replacement of exhaust system components.
9. Gradually unscrew the nuts securing the intake and exhaust manifolds and separate the manifolds from the cylinder head. Remove the manifold gasket.
Installation
1. Install in reverse order, paying attention to the following.
- a) Make sure the contact surfaces of the cylinder head and manifold are clean and use a new gasket. Tighten all fasteners to the specifications Specifications effort.
- b) Connect the front of the exhaust system to the manifold, refer to Section General description and replacement of exhaust system components.
- With) Where applicable, install the EGR valve in the tube as described in Exhaust emission control systems current Chapter.
- d) Position all wiring or hose brackets as noted prior to removal.
Models with turbocharger
Removing
1. Although the manifolds are separate, they are fastened with the same nuts.
2. To facilitate access, unscrew the reinforcing rod between the domes of the front suspension struts. Also jack up the front of the car and place it on axle stands. Where available, remove the lower engine cover.
3. Note the location of the electrical wiring brackets or hoses attached to the manifolds and remove them.
4. Disconnect the breather hoses from the intake manifold, noting their location to make installation easier.
5. Remove the turbocharger as described in Section Removal and installation of a turbocharger.
6. On models equipped with an exhaust gas recirculation system, remove the valve and tube as described in Exhaust emission control systems.
7. Unscrew the engine ground cable from the mounting lug on the right end of the intake manifold, then unscrew the bracket from the pipeline.
8. Gradually unscrew the nuts securing the intake and exhaust manifolds and separate the manifolds from the cylinder head. Remove manifold gasket (refer to accompanying illustration).
Installation
1. Install in reverse order, paying attention to the following.
- a) Make sure the contact surfaces of the cylinder head and manifold are clean and use a new gasket. Tighten all fasteners to the specifications Specifications effort.
- b) Where applicable, install the EGR valve and tube as described in Exhaust emission control systems.
- With) Install the turbocharger as described in Section Removal and installation of a turbocharger.
- d) Make sure the breather hoses are properly connected as noted prior to removal.
- e) Position all wiring or hose brackets as noted prior to removal.