Originally Posted by wilbur1

Just repaired lines on my 96 c280. the vacuum block is nothing more than a empty block or distrubutor for connecting the vacuum lines to other areas. Make sure ALL the ports have lines attached or a plug in place. My block was missing a plug and thus the system would not pull a vacuum. Mercedes part no. 124-805-02-44 $2.40 each. (looks like 10 cents worth of red plastic)