Chevrolet 14097601 Manifold, Lower Intake

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To take out the intake manifold, it is necessary to first reduce the fuel system pressure and remove the negative battery cable. Next, empty the cooling system then carry out removal of throttle body. Start by labeling vacuum and breather hoses, electrical wires etc before removing oil/air separator, oil fill cap and dipstick assembly. Unbolt / detach oil fill tube from engine block; remove intake manifold brace then loosen up manifold mounting nuts/bolts. In case of need use soft-face hammer to displace manifold away from cylinder head. For proper installation ensure that mating surfaces of cylinder head and manifold are clean and make use of gasket scraper to get rid of old sealant as well as gasket material. Clean mating surfaces with lacquer thinner or acetone. Chase threads in bolt holes with tap; blow out chips with compressed air; put gasket on cylinder head with all openings properly aligned; place intake manifold without tearing gasket; start nuts /bolts by hand then three step tighten them down finally reverse remaining removal steps, start engine up and check for leaks at intake manifold joints.

Remove the mounting nuts from the intake manifold and separate it from the engine.

The initial steps to remove the manifold are relieving the fuel system pressure and disconnecting the negative battery cable.

Place the new intake manifold gasket and rubber manifold seal in position at the front and rear rails of the cylinder block, ensuring the pointed end of the seal fits snugly against the block and head.

Position new manifold side gaskets on each cylinder head, using sealant around the water passages and ensuring proper mating with the front and rear seals. Lower the intake manifold into position carefully, attach the small by-pass hose to the water pump, and for Oldsmobile-manufactured engines, dip each bolt in clean engine oil before torquing the attaching bolts to specifications in the correct order.

Remove the valve covers.

You should remove the oil fill cap and dipstick assembly, unbolt the oil fill tube, and detach it from the engine block, rotating as needed for clearance.

Detach the control cables from their brackets by pinching the tabs.

After that, remove the manifold mounting bolts and nuts, taking care not to pry between the manifold and heads to avoid damaging the aluminum gasket sealing surfaces.

Separate the intake manifold and gasket from the engine, scraping all traces of gasket material off the intake manifold and head gasket mating surfaces while being careful not to scratch or gouge the delicate aluminum surfaces.

For installation, reverse the removal steps, using a new gasket and tightening the nuts and bolts to the specified torque in the correct sequence.