Opel Kadett Owner's Manual page 102

13.3b Disconnecting a fuel injector plug
wire clip, and the outer is retained in its
bracket by an E-clip (see illustration).
10 Unscrew the nuts which secure the inlet
manifold to the cylinder head. The lower nuts
are different to reach: a small socket or ring
spanner will be needed.
11 Lift away the manifold and recover the
gasket (see illustrations).
2.0 litre 8-valve models
12 Refer to the information given above in
paragraphs 2 to 11, noting the hose
connections shown (see illustration).
2.0 litre 16-valve models
13 Disconnect the battery earth (negative)
lead.
14 Drain the cooling system (see Chapter 1).
15 Remove the pre-volume chamber, the air
mass meter and its trunking as described in
Section 12.
16 Remove the alternator drivebelt and the
13.4 Distributor vacuum hose (A), coolant
hose (B) and breather (C) on throttle housing
13.11b Inlet manifold showing injectors
fuel rail and associated components
Fuel and exhaust systems - fuel-injected models 4B•13
13.3c Unplugging the throttle valve switch
lead connector
adjuster strap nut and bolt (see Chapter 1).
17 Disconnect the throttle cable from the
throttle housing. Pull the cable out of the
retainer and move it aside (see illustration).
18 Remove the 9 nuts which secure the
manifold to the cylinder head. These are all
stiff and some are not easily accessible; a
socket with a "wobble drive" or universal joint
will be needed. Once the nuts are removed,
slide the manifold back on its studs to
improve access to the injector wiring rail.
19 Disconnect the two breather hoses from
the camshaft cover.
20 Disconnect the injector wiring rail from the
injectors as described earlier.
21 Release the earth straps from each end of
the fuel rail.
22 If a vent valve is fitted, disconnect the
multi-plug and the hose from it.
23 Disconnect the throttle position switch
multi-plug.
13.9 Accelerator cable at engine end
13.12 Throttle valve housing - ML4.1
A Hose from idle speed adjuster
B Crankcase ventilation hose
C Coolant hose
D Coolant hose
13.3d Unplugging the auxiliary air valve
24 Bearing in mind the information given in
Section 6, disconnect the fuel supply and
return unions from the fuel rail. Be prepared
for fuel spillage.
25 Release the fuel supply hose bracket from
the throttle housing.
26 Release the cable tie which secures the
coolant hoses to the right-hand side of the
manifold.
27 Disconnect the brake servo vacuum hose
and the large coolant hose from the base of
the manifold (see illustrations).
28 Unhook the clutch cable from the bracket
behind the manifold.
29 Disconnect the small coolant hose from
the expansion tank.
30 Disconnect the air hose which connects
the idle speed adjuster to the base of the
manifold.
31 With the help of an assistant, lift the
manifold to gain access to the idle speed
13.11a Removing the inlet manifold -
1.8 litre model
13.17 Pulling the throttle cable out of the
retainer
4B