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| Close cut-off valves -B+C-. |
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| Start warm engine (>60° C), press accelerator briefly (engine speed greater than 2000/min). |
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| Read indicated measured value. |
Normally (see notes), the vacuum that is generated should be between 600 and 950 mbar (depending on engine size). |
If the measured value is not reached even through the preconditions (see notes) have been met, the vacuum system must first be checked for leaks. |
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| For comparison purposes, generate the vacuum with the manual vacuum pump -VAS 6213- → Chapter. |
Open cut-off valve -B- to facilitate removal of hose connections and adapter. |
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