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Old 11-23-2002, 10:22 PM
ctaylor738 ctaylor738 is offline
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Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
380SL Vacuum Questions

I have my Road Kill '81 380SL running and driving with it's new double-chain euro spec motor, and am now starting to straighten out some of its other problems. First up is heat and defrost. First problem: no vacuum to the climate control system.

There is a large grey vacuum line that runs across the firewall from a series of Y connectors on the left side. This is obviously the main vacuum line but it is not connected to anything. How/where does it connect to the engine?

The diagram/picture in the manual implies it is off the main fitting for the brake booster ("engine pipe"), but there is no connector there.

There is a another vacuum source in that area, but it connects to the transmission and to a Y with one side going to the fuel system and the other underneath the manifold. No spare connection there.

Second question - where is the vacuum tank shown in the diagram?

Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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