Removing The Intake Manifold Plenum
There are some cases where the upper intake manifold plenum needs to be removed to visually inspect the fuel injectors and/or test their internal resistance of value.
The difficulty level of removing the upper intake manifold plenum isn't that high. To avoid complications, here are my suggestions:
TIP 1: Cover the open intake manifold runners with shop towels when you remove the plenum. When you remove the plenum, the intake manifold runners are going to be exposed to open air. It's important that you cover them with a clean shop towels to avoid having anything fall into them.
If anything falls into the open intake manifold runner and makes it into the inside of the cylinder, the only way that you'll be able to remove the object is by removing the cylinder head. This is a nightmare you want to avoid.
TIP 2: Don't use any type of sealant on the intake manifold plenum gaskets you should install the intake plenum gaskets dry (without any type of sealant).
TIP 3: Use a torque wrench to tighten the plenum bolts to 11 foot pounds.
Tightening the intake manifold plenum bolts will help you to avoid damaging the gaskets and/or over tightening and stripping the threads of the bolt holes in the intake manifold.
TIP 4: Disconnect the battery negative (-) cable from the negative battery post. Disconnecting the battery negative cable from the battery is a simple safety precaution so that the engine won't be accidentally cranked while the plenum is off the engine.
More 3.5L V6 Chevy Malibu Tutorials
You can find a complete list of 3.5L V6 Chevy Malibu tutorials here: GM 3.5L V6 Index Of Articles.
Here's a list of articles, you'll find there:
- How To Test The Engine Compression (2004-2008 3.5L Chevrolet Malibu).
- How To Do A Cylinder Balance Test (2004-2008 3.5L Malibu).
- How To Test A Blown Head Gasket (2004-2008 3.5L Malibu).
- How To Test The MAF Sensor (2004-2008 3.5L Malibu).
If this info saved the day, buy me a beer!
