usually your intake manifold is ok...the manifold gaskets are prone to failure..they are plastic with rubber impregnated seals...if the manifold is actually pitted, you can repair with JB WELD then sand smooth....
ase master certified tech
i suggest you get a repair book.it is not easy
It is on the firewall end of the intake manifold below the distributor
It is attached to the bank of fuel injectors (the spider) under the upper 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.
Oh, the MAP sensor in your 1997 Blazer is usually located on the intake manifold or firewall. It's a small, important part that helps your engine run smoothly by measuring the air pressure in the intake system. Just take your time and follow the hoses from the intake manifold to locate it, and remember, there are no mistakes, just happy little accidents in the world of car maintenance.
Assuming you have the 4.3L engine it would be located under the upper intake manifold. After removing the upper intake manifold you will see the fuel pressure regulator attached to the bank of injector "poppets".
intake manifold is under the throttle body
What are the intake manifold torque specs on 1998 Oldsmobile bravada?"
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located on the intake manifold just follow the upper radiator hose to the engine should be 2 bolts holding the thermostat housing down.
The Villager has an upper and lower intake manifold. It is at the top of the engine with the throttle body attached to it.
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