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remove upper intake plenum
Under the intake plenum
Follow the intake air plenum from the air filter. It connects to the carburetor. The carburetor is mounted on the intake manifold.
Its under the intake manifold/plenum towards the rear of the engine
The intake plenum on a V-6 or V-8 is bolted to the top of the intake manifold. It has the throttle body bolted to it. The throttle body houses the throttle plate and is located at the end of the tube that starts at the air filter housing. Sometimes the intake manifold on a 4 cylinder is referred to as a plenum. It works the same way and is found in the same manner. Look for the air filter housing, then follow the hose past the throttle body to the intake or plenum.
It connects to a nipple on the bottom of the intake plenum. Reach under the top left side to find the connection point. With the intake plenum installed it is a blind connection.
The plenum is the intake manifold.
The intake plenum on most cars is bolted directly atop the intake manifold. This is where the air goes after passing through the throttle body.
Where is the plenum bolt for a 1994 toyota pick-up
You have to remove the throttle body/air intake plenum to get to the rear plugs. I believe the plenum is supported with two or three stays which are hard to see. You will need a new gasket for the plenum/intake manifold interface.One post on Toyota Nation Forum says that it can be done without removing the plenum. I think he is skilled at beating the clock at a repair shop.
The intake plenum is simply the top of the upper intake manifold, where the throttle body is attached. It is made of black plastic.
Plenum is another name for the upper intake manifold.