Check for bad vacuum line connectors in the area right around and above the brake booster. Often these get hard and brittle. If you need more line, take a piece to an autoparts store and match it up.

Keep us posted,

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)