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Intake Manifold

Frequently Asked Questions

The intake manifold is a component in the air train of a multi-cylinder internal combustion engine. Also known as a distributor, its function is to supply each cylinder with the amount of air required for complete fuel combustion. It can be made of cast iron (steel or aluminum) or, due to low temperatures, plastic.

In all intake manifolds, a manifold gasket is installed between the manifold and the engine to provide a tight seal. This gasket is usually made of metal or rubber for plastic intakes. A defect in the gasket can lead to leaks and various engine problems (misfiring, engine light, etc.).

This part connects the air filter (or air compressor) to the engine's cylinder head(s). Its purpose is to evenly distribute the air entering the cylinders.

Step 1: Prepare for replacement : Before replacing the intake manifold, some preliminary work must be done. Depending on the model, you may need to remove the air filter or air supply line. Electrical connections and any other hoses must also be disconnected.

Step 2: Remove the Intake Manifold: The next step in the repair process is to remove the intake manifold or intake bridge. This is done by unscrewing all the bolts on the part in the engine compartment. The intake manifold can then be removed.

Step 3: Prepare for Installation: The next step is to prepare the new intake manifold for installation. If the intake manifold does not come with gaskets, install one gasket per channel. If the intake bridge is worn, replace each seal with a new one.

Step 4: Install the Intake Bridge: The final step is to install the intact intake bridge. This is done in reverse order. To diagnose other engine problems, it's a good idea to take a look at the intake ports on the cylinder head first. Once installed, all components such as the air filter are replaced and the engine is tested.

Step 1: The first step is to completely disassemble the intake manifold after removing the EGR valve and throttle body. To do this, remove the four screws at the top and bottom of the intake manifold using your 5mm Allen wrench.

Step 2: Once you've removed the part, you're ready to clean it. Start by using a pressure washer.

Step 3: Once you've done this, apply the stripper and let it sit for a few minutes.

Step 4: Rinse with clean water and allow to dry.

Step 5: You can also vacuum each hole to remove any dust that may be left behind.

Step 6: If your intake manifold gasket is too damaged, it's best to replace it. You won't have any trouble knowing which way the gasket should go. In fact, it can only be installed one way.

Step 7: Once the intake manifold is cleaned, you can reassemble it by following the steps above in reverse.

The intake manifold is a part with no predetermined lifespan. However, it can deteriorate over time due to the high temperatures it is exposed to. Here are some symptoms of intake manifold wear:

Hard acceleration

Loss of engine power

Engine overheating

Frequent stalling

Excessive fuel consumption

Coolant leakage due to defective gasket

Clogged or cracked intake manifold

Difficulty maintaining a steady speed on the road

Unusual engine noise

Oil puddles under the vehicle

If your vehicle is experiencing any of these symptoms, we recommend that you have your intake manifold checked by a professional.

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