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The manifold block directs the hydraulic fluid into or out of the cylinder.
The pressure regulator is located under the upper intake manifold. Find your fuel lines entering the manifold (right behind where the air enters the manifold)...the pressure regulator is on the bottom side of that cluster*%$. You will need to remove the upper manifold to reach it and change the regulator.
sealing and covering the cylinder block is the main function of CHC. In some type the cylinder head cover is integrated with air cleaner and air intake manifold.
Assuming this is a 4.3L engine, the fuel pressure regulator is located under the upper intake manifold. The upper intake manifold must be removed to gain access to the regulator.
its not in the manifold it should be on your fuel rail
in the intake manifold
Between the intake manifold and the cylinder head.
The manifold in a car passes air from one central source to each cylinder opening on the cylinder head.
The pressure regulator is located on top of the intake manifold on the fuel rail
Directly behind the intake manifold: between manifold and firewall.
You will find the fuel pressure regulator under the upper intake manifold. The upper intake manifold will have to be removed to gain access. The regulator will be attached to the bank of injector poppets also known as the "spider".
The fuel pressure regulator is located on the fuel rail right in front of the intake manifold.