Removal and installation of an inlet collector

Withdrawal

1. Depressurize the fuel system as recommended in Chapter 4.

2. Disconnect the negative battery cable.

3. Drain the cooling system (see chapter 1) and disconnect the cooling hoses from the manifold.

4. Remove the CFI fuel fill assembly or upper intake manifold (chapter 4) then remove the throttle cable bracket, (see picture).



5. Tag and disconnect remaining wires, brake booster vacuum hose, cruise control vacuum hose, EGR valve vacuum hose; PCV hose and all other vacuum hoses (see drawing), connect to the throttle body or intake manifold.



6. Disconnect the tube from the EGR valve (see picture).



7. Disconnect the wire of the oxygen sensor and remove the tip of the cooling tube from the intake manifold (see picture).




8. Turn off bolts and disconnect a collector from a head.

Caution: Do not place the lever between the mating surfaces of the gaskets.

Installation

Note: The mating surfaces of the cylinder heads and manifolds must be very well cleaned before installing the manifold.

9. Use a special scraper to remove all traces of gasket material, then clean the mating surfaces with solvent or acetone.

10. With a tap of the correct size, go through the threaded holes for the bolts, then with a jet of compressed air (if possible) blow out the shavings.

Warning: When using compressed air, protect your eyes with goggles or a shield.

11. Apply a thin layer of RTV sealant to the mating surfaces of the manifold and gasket on the cylinder head side. Start one bolt on each side of the manifold, thread a new gasket through them, then install the manifold on the head and tighten the bolts. Install the remaining bolts, tighten them to the required torque. in the recommended order (see picture). Reach the required moment in three steps.



12. Further installation is carried out in the reverse order of disassembly.