For the removal and installation of intake manifolds on various engine types, specific steps and precautions must be followed. In the case of 196, 231, 252, and 350 Buick Engines, the process begins with disconnecting the negative battery cable and draining the radiator. Then, the air cleaner is removed, followed by disconnection of the upper radiator hose and heater hose at the manifold. The accelerator linkage and bracket, cruise control chain (if applicable), fuel line, booster vacuum pipe, and other components are disconnected or removed accordingly. On 1976 models, the choke pipe at the choke housing is disconnected, and various wires, hoses, and brackets are labeled and disconnected. On six-cylinder models, distributor cap and wires may need to be removed to access a Torx® head bolt. Throttle linkage springs and other components are also removed as needed, and finally, the manifold itself is removed. Installation involves using a new gasket with sealer on the rubber gasket seals, ensuring proper alignment, and tightening the bolts in the specified order. For 305 and 350 Chevrolet Engines, the process begins with draining the cooling system and removing the air cleaner. Battery ground is disconnected, followed by the upper radiator hose and heater hose at the manifold. All linkages and hoses connected to the manifold and carburetor are disconnected, and the distributor is removed after marking the rotor position. Various brackets, springs, and components are also removed before unbolting and removing the manifold. Installation involves reversing the removal steps while following a specific bolt tightening sequence. For 350 and 403 Oldsmobile Gasoline Engines, the process starts with removing the carburetor air cleaner and draining the radiator. The upper radiator hose, bypass hose, and heater hose are disconnected. Throttle linkage, vacuum, and gas lines are disconnected from the carburetor, and brackets related to the generator and air conditioning are removed as necessary. The temperature gauge wire and other electrical leads are disconnected, and components like the EGR solenoid assembly and Idle Load Compensator (ILC) are removed. The EGR valve is also removed before unbolting and removing the intake manifold. Installation involves cleaning gasket surfaces, applying sealer, placing gaskets, and securing the manifold bolts in a specific sequence. For 307 Oldsmobile Gasoline Engines, the process begins with removing the carburetor air cleaner and draining the radiator. Hoses, including the upper radiator hose, bypass hose, and heater hose, are disconnected. Throttle linkage, vacuum lines, and gas lines are also disconnected. Brackets related to the generator and air conditioning are removed if necessary. Electrical leads and components like the EGR solenoid assembly and Idle Load Compensator (ILC) are disconnected and removed. The EGR valve is taken out, and then the intake manifold bolts are removed. Installation involves cleaning gasket surfaces, applying sealer, placing gaskets, and securing the manifold bolts in a specific sequence. For 265 and 301 Pontiac Engines, the process does not require a specific torque sequence. It involves removing the EGA valves (except for the 301), draining the radiator and block, and disconnecting various hoses, brackets, and components. The distributor may also be removed, and then the intake manifold bolts are removed, allowing for manifold removal. Installation involves cleaning gasket surfaces, applying sealer, placing gaskets, and securing the manifold bolts. For 263 and 350 Oldsmobile Diesel Engines, the process begins with removing the air cleaner and draining the radiator. Various hoses, brackets, and components are disconnected or removed, including the fuel injection pump and lines, vacuum pump or oil pump drive assembly, and more. The intake manifold bolts are then removed, allowing for manifold removal. Installation involves applying sealer, placing gaskets, securing the manifold bolts, and reinstalling all removed components in reverse order.
Posted by GMPartsGiant Specialist