6) Check the differentiated air intake system for leaks with auxiliary diagnosis equipment

For discovering leaks, the use of auxiliary diagnosis equipment 81 29 0 426 464 is mandatory. Please also observe the repair instructions RA 11 61 730! The seal plugs must seal the differentiated air intake system airtight.- No leaks are to be found through fizzing noise.- Larger leaks are normally visible or the pressure cannot be built up using the auxiliary diagnosis equipment.