Ninety-Eight V6-3800 3.8L (1989)
Intake Manifold And Gaskets
Intake Manifold Bolt Tightening Sequence
REMOVE OR DISCONNECT
1. Release fuel pressure and disconnect fuel lines from fuel rail, refer to Fuel Delivery and Air Induction / Fuel Pressure Release.
2. Negative battery cable.
3. Drain coolant in suitable container.
4. Drive belt, alternator and brace.
5. Power steering pump braces.
6. Coolant bypass hose, heater pipe and upper radiator hose.
7. Air inlet duct and throttle cable bracket from throttle body.
8. Vacuum hoses and electrical connectors from intake manifold.
9. EGR pipe, EGR valve and adapter from throttle body adapter.
10. Throttle body coolant pipe from intake manifold.
11. Throttle body adapter and throttle body from intake manifold.
12. Rear spark plug wires.
13. Intake manifold bolts and intake manifold.
14. Clean the cylinder block, heads and intake manifold sealing surfaces of ALL oil with a suitable solvent.
15. Clean the intake manifold bolts and bolt holes of adhesive compound.
INSTALL OR CONNECT
1. Intake manifold gaskets and seals. Apply GM sealer P/N 12345336 or equivalent to the ends of the manifold seals.
2. Intake manifold.
3. Apply thread lock compound P/N 12345493 to the intake manifold bolt threads, install and tighten the bolts TWICE in sequence to 10 Nm (88 lbs