What are the causes of high intake pressure?

[MalachiLynn]

The causes of high intake pressure are as follows: 1. Throttle opening: The smaller the throttle opening, the greater the suction effect formed by the piston during intake, the greater the intake manifold suction, the higher the vacuum, and thus the lower the intake pipe pressure (the intake manifold suction is opposite to its current suction). 2. Engine speed: The higher the engine speed, the greater the suction effect formed by the piston during intake, the greater the intake manifold suction, the higher the vacuum, and thus the lower the intake manifold pressure. 3. Sealing performance: This includes the sealing performance of the intake manifold and cylinders. The better the sealing performance, the greater the intake manifold suction, the higher the vacuum, and thus the lower the intake manifold pressure.