Removal
Warning: Use caution when performing this procedure in the exhaust manifold area, noting that the sheet metal insulation shield may have sharp edges. Before starting this procedure, you should wait until the engine has completely cooled down.
1. Disconnect the negative battery cable.
2. Raise the car with a jack and install vertical supports.
3. While working under the vehicle, apply penetrating oil to the studs and nuts that secure the exhaust pipe to the exhaust manifold (As a rule, these fasteners are susceptible to corrosion) (see illustration).
5.3. Exhaust pipe bolts/nuts are accessible from under the vehicle
4. Wait for the oil to soak in for a few minutes, then unscrew the nuts securing the pipe to the manifold.
5. Disconnect the oxygen sensor wire connector. Unscrew the nuts and remove the heat insulation shield (see illustration).
5.5. Exhaust manifold heat shield nuts
6. Unscrew the mounting bolts and disconnect the intake manifold from the cylinder head (see illustration).
5.6. Exhaust manifold bolt locations (some fasteners are invisible from the given angle)
7. Remove the exhaust manifold gasket and clean its mating surface, as well as the surface of the cylinder head.
Installation
8. Inspect the exhaust manifold for cracks and chips. Make sure the bolt threads are clean and undamaged. Before installation, make sure that the mating surfaces of the manifold and cylinder head are undamaged and clean. Remains of the gasket and carbon deposits are removed using a scraper.
9. Determine the degree of curvature of the commutator mating surface using a ruler and a set of flat feeler gauges to measure gaps. If the surface deviation is outside the specification limits, the manifold must be machined and/or replaced.
10. Install a new gasket.
11. Install the manifold onto the cylinder head, apply heat-resistant anaerobic sealant to the bolt threads and finger tighten.
12. The remainder of the installation procedure is performed in the reverse order of removal.
13. Start the engine and make sure the exhaust system connections are gas-tight.