The air intake manifold is a crucial part on any car as it delivers the air into the combustion chamber, and allows the ignition of the fuel. Over time the inside of the air intake manifold may become dirty due to blowback from the combustion chamber and dirt being pulled into the manifold from the air intake hose. Cleaning an air intake manifold is not that difficult, and anyone can do it.
- Skill level:
- Moderately Easy
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Things you need
- Engine cleaner treatment
- Intake cleaner
- Socket set
- Screw drivers
- Box end wrenches
- Engine degreaser
- Putty knife
- Needle nose pliers
Use a quality engine cleaner treatment that can be added to your gas tank first. Then remove the air cleaner or air intake hose and spray the intake cleaner into the air intake hose while the car is running. Disconnect the battery cables from the battery, using the box end wrenches.
Drain the cooling system by removing the drain plug from the bottom passenger side of the vehicle with one of the box end wrenches. Remove coolant hoses from the air intake, using the screwdrivers to remove the hose clamps and sliding the hoses off the nozzles.
Remove the air cleaner with the screwdriver and disconnect any vacuum hoses located on the intake manifold. Disconnect the fuel line and disconnect the wiring harness from carburettor. Remove any air ducts that run between the exhaust manifold and the air cleaner and choose the proper size socket to remove intake mounting bolts and detach the manifold along with the carburettor from the engine.
Remove the main part of the intake manifold gasket with the putty knife and scrape the intake ports to remove any excess carbon. Wipe the mating surfaces of the engine and intake manifold with the acetone cleaner. Install the new manifold gasket on the mating surface of the intake manifold.
Install the intake manifold in position on the cylinder head and carefully align the new gasket. Install the mounting bolts and tighten them down with the box end wrenches.
Tips and warnings
- Make sure the engine is completely cool before beginning this procedure to avoid burning yourself.
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