Where is the vacuum tube of motorcycle engine?

The vacuum tube of motorcycle engine is on the intake pipe behind the engine throttle. Generally, it is connected with the vacuum tube of the brake booster through a very thin hose. When this pipe is unplugged, there will be no brake booster, which is very dangerous. Power steering vacuum tube. If this tube is pulled out, there will be no power steering, which is also very dangerous. Unplug the carbon canister vacuum tube, which will pollute the air. Unplugging the crankcase ventilation system pipeline is not dangerous and will pollute the air.

Function of engine vacuum tube

There are vacuum booster pumps in the braking system, some variable air intake technologies need vacuum control, some cruise systems need vacuum control, fuel vapor in the activated carbon tank needs vacuum, and crankcase ventilation system needs vacuum.

Some air conditioning systems need vacuum to switch air ducts. The vacuum tank is actually a sealed tank. It is connected with the intake pipe of the engine through a vacuum tube and plays the role of a brake booster in the braking system. Connect the vacuum pressure sensor of the engine to provide vacuum signal to the sensor.