Intake Manifold (CADILLAC): Removal

Disconnect negative battery cable, remove air cleaner and crankcase filter. Disconnect throttle cable and cruise control linkage at throttle body, remove cable from bracket and position out of way. Disconnect all electrical wiring, vacuum lines and fuel lines.
CAUTION: Fuel in injection system could be under pressure. Relieve pressure by removing cap from Schrader fitting on fuel rail near pressure regulator. Then loosely install suitable valve depressor (J-5420) on fitting and arrange a shop rag or container to collect fuel. Slowly tighten valve depressor tool until pressure is relieved.
Remove PCV valve from cover and position out of way. Remove spark plug leads, drain radiator and disconnect upper radiator hose, thermostat by-pass hose and heater hose at rear of manifold. Position A/C compressor out of way and remove fuel return hose from pressure regulator. Remove bolts and lift intake manifold from engine. Do not lift manifold by fuel rails or brackets.