Disassembly steps of Buick Excelle intake pipe

On one side of the engine, there is a detachable screw for fixing the exhaust into the manifold.

Dismantling the engine intake manifold includes the following steps: separating the vehicle body, fixing the position, opening the buckle, opening the intake manifold, taking out the air filter, then removing the whole intake pipe, removing the throttle valve, removing the mounting screws falling into the intake manifold, and removing the manifold. The intake manifold is located between the throttle and the cylinder head. However, before removing this intake manifold, the air duct connected with the throttle valve must be removed before removing the intake manifold. This step can't be omitted, otherwise the throttle can't move freely.