Attention! When carrying out work on fuel pipelines, ensure that leaking fuel is collected and disposed of.
Removing the intake manifold(23, see Fig. 3.18) must be carried out in the following order.
1 - rubber bushing; 2 - air intake; 3 - casing; 4 - shock absorber; 5 - ring (91x6); 6 - bracket (34 mm); 7 - snob (42 mm); 8 - muffler/housing; 9 - spacer sleeve; 10 - bracket; 11 - bolt (M6x12); 12 - socket; 13 - hinge; 14 - idle valve; 15 - valve bracket; 16 - replaceable filter element; 17 - bolt T (M6x18); 16 - actuator unit; 19 - temperature sensor; 20 - ring (8x3); 21 - nut (M6); 22 - bushing; 23 - intake manifold; 24 - nut (M7); 25 - gaskets; 26 - ring (7X3); 27 - screw; 28 - adapter
Disconnect the "-" terminal of the battery. Remove the upper engine casing and the air intake (2).
Remove the upper covers covering the engine injectors and ignition coils, for which remove the plugs and unscrew the bolts located under them, remove the cover from the oil filler pipe.
Disconnect the exhaust gas oxygen concentration sensor (EGOS) connectors. Loosen the clamp securing the "+" wire terminal on the intake manifold and disconnect the "+" wire terminal to connect an additional power source. Press the retainer and remove the engine crankcase ventilation hose.
Remove the bracket (1, Fig. 3.144), disconnect the incoming air temperature sensor (2).
Remove the mounting plate (3) of the injectors and put it aside. Disconnect the SS from the fuel tank ventilation valve and remove the valve from the holder on the intake manifold.
Release the fuel line from the holder on the manifold and disconnect it. Remove the oil level indicator dipstick and unscrew the dipstick guide tube fastening. Loosen the clamp and disconnect the oil return hose to the oil level indicator guide tube.
Remove the throttle body. Disconnect the shock absorbers and move the cable box aside. Release the shock absorbers from the holder. Unscrew the nut (24, see Fig. 3.18) intake manifold supports.
Loosen the mounting bolts (9 pcs., arrows, Fig. 3.145) intake manifold and remove it.
Close all openings of the intake manifold and cylinder head. Foreign bodies entering the intake ports can cause engine failure.
The installation of the intake manifold should be carried out in the reverse order, while checking the integrity of the sealing gaskets (25, cm, Fig. 3.18) and make sure they are positioned correctly. Replace them if necessary.
Check the damper rubber mounting pads, replace them if necessary together with the intake manifold support and install its support.
Install the intake manifold on the cylinder head and tighten its mounting bolts evenly, crosswise, to a torque of 20–25 N·m (2.0–2.5 kgf·m).