Reasons for a hissing sound after starting the car?

[VanBrody]

Reasons for a hissing sound after starting the car: There may be damage or leaks in the hoses on the engine's intake manifold. Solution: Visit a repair shop for maintenance or replacement. Here is some related information about the intake manifold: 1. For carburetor or throttle body fuel injection engines, the intake manifold refers to the intake passage from the carburetor or throttle body to the cylinder head's intake port. 2. The function of the intake manifold is to distribute the air-fuel mixture from the carburetor or throttle body to each cylinder's intake port. 3. For port fuel injection engines or diesel engines, the intake manifold's function is solely to distribute clean air to each cylinder's intake port.