Jeep 1987 Wrangler Workshop Manual page 378

JP1
ENGINES
4.2 LITER (258 CID) SIX-CYLINDER ENGINE
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Clean the mating surfaces on the manifold and
cylinder head.
NOTE If the manifold is being replaced, ensure
all the fittings, etc. are transferred to the
replacement manifold.
INTAKE MANIFOLD INSTALLATION
Position a replacement intake manifold gasket
(3) on the cylinder head and install the intake
manifold (2).
Install the remaining attaching hardware.
Tighten all the bolts and nuts according to
the sequence illustrated. Tightening torque is
31 N-m (23 ft-lbs).
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Install the vacuum hoses.
Install the carburetor studs, replacement
gaskets and spacer.
Install the carburetor and connect the linkage
and hoses.
Tighten the carburetor mounting nuts with
19 N-m (14 ft-lbs) torque.
Connect the fuel pipe and air horn vent hose to
the carburetor.
Connect the idle speed control vacuum hose
and wire connector.
Connect the choke heater wire connector.
Install the A/C compressor drive belt idler pulley
assembly, if removed.
Install the power steering pump mounting
bracket, if removed.
Install the drive belt(s) and tighten to the
specified tension. Refer to the Cooling Systems
section.
Install the vacuum advance C T O valve vacuum
hoses.
Connect the following wire connectors:
• C E C (feedback) system coolant temperature
sender
• electric intake manifold heater
B-144