2. Remove the air filter (see chapter 4, section 8).
Front manifold
3. Allow the engine to cool completely, then drain the coolant (see chapter 1, part 29).
4. Disconnect the cooling system pipe (see section 4).
5. Unscrew the bypass from the flange (U-shaped) pipes (see illustration) bolts and disconnect the bypass pipe from the front exhaust manifold.
8.5. To disconnect the cross pipe of the exhaust system from any of the exhaust manifolds, it is enough to unscrew the two nuts located on its flange (shown by arrows)
6. Remove the air conditioning compressor leaving the hoses connected (see chapter 3, section 15).
7. Remove shock absorber (see section 4).
8. Remove the air conditioning compressor bracket and strut (see illustration).
8.8. To remove the air conditioning compressor bracket and shock absorber, unscrew the five bolts shown by the arrows (top left bolt recessed; it has a turnkey head togh)
9. Turn away bolts of fastening of a final collector and disconnect a collector from a head of cylinders.
8.9. Bolts of fastening of a forward final collector (shown by arrows)
10. Clean the mating surfaces of the exhaust manifold from the remnants of the material of the old gasket, then check the manifold for deformations and cracks. To determine the presence of warping of the manifold flange, you can use the ruler attached to it. If a stylus thickness greater than 0.030 in. is passed between the edge of the ruler and the face of the flange (0.75 mm), take the collector to a repair shop for re-treatment of its surface.
11. Install the manifold in place with a new gasket and hand-tighten its mounting bolts.
12. Starting from the center and working towards the edges, tighten the bolts a little at a time until they are all tightened to the required torque specified in the specifications in this chapter.
13. Install the rest of the parts in reverse order.
14. Starting the engine, check the joints between the manifold and the cylinder head and between the manifold and the exhaust pipe for exhaust gas leakage.
Rear manifold
15. Access to the rear exhaust manifold Opens from the bottom of the car. Apply the parking brake, block the rear wheels, jack up the front of the vehicle and place it on stands.
16. Disconnect the oxygen sensor wire (see chapter 6, section 4).
17. After unscrewing the locknuts from the bypass pipe flange, disconnect the pipe from the rear exhaust manifold (see illustration 8.5).
18. Turn away two bolts of fastening of an exhaust pipe to a collector. It may be necessary to lubricate the threads of the fasteners with a rust remover. Disconnect the exhaust pipe from the exhaust manifold (see chapter 4, section 14).
19. Turn away bolts of fastening of a final collector (see illustration).
8.19. Rear exhaust manifold bolts (shown by arrows)
20. Clean the mating surfaces of the exhaust manifold from the remnants of the material of the old seal, then check the manifold for deformations and cracks. To determine the presence of warping of the manifold flange, you can use the ruler attached to it. If a stylus thickness greater than 0.030 in. is passed between the edge of the ruler and the face of the flange (0.75 mm), take the manifold to a repair shop to resurface it.
21. Reinstall the manifold with a new gasket and tighten the bolts by hand.
22. Starting from the center and working towards the edges, alternately tighten the bolts a little at a time until they are all tightened to the required torque specified in specifications, given in this chapter.
23. Install the rest of the parts in reverse order.
24. Having started the engine, check up joints between a collector and a head of cylinders and between a collector and an exhaust pipe on leak of the fulfilled gases.