What are the two pipes on the cylinder head of Volkswagen 2000?

There are two pipes on the valve cover, one of which is connected with the intake manifold, and the exhaust gas generated in the crankcase (gas escaping from the piston ring) is sucked into the cylinder for combustion by using the vacuum degree in the manifold. A car with this pipe must have another pipe, and the other pipe is connected to the intake passage between the air cleaner and the throttle valve to supplement the gas in the crankcase.

Volkswagen is an automobile manufacturing company headquartered in Germany, which was established on March 28th. 1937. The company owns brands such as Audi and Volkswagen.

Santana car is a brand car produced by Volkswagen in Germany. Since 1985, after more than 20 years of production history, ordinary Santana cars have spread all over the country. On 20 12 10, Shanghai Volkswagen announced that the old Santana would stop production and advertised "Goodbye Santana", announcing to the world that the old Santana would become a classic thing of the past. The new Santana will start a new journey from Wolfsburg, Germany to Beijing with a new attitude.