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E-Type Series II vacuum connections

Lee

Freshman Member
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I've been working on detailing the engine bay of my '70 E-Type, and in the process of locating and correcting vacuum leaks I discovered an open vacuum connection under the mounting flange of the front carburetor. Though it wasn't connected to anything, it was obviously pulling in air. I assume its purpose was originally to operate the heat-sensitive air door in the air cleaner housing, (does anyone know whether this is correct?)but my car was changed over to Longflow air filters a long time ago.

Also, does anyone have any experience with the effects of a non-operational vacuum retard unit on the distributor? Mine hasn't worked since I got the car. Is it supposed to have a performance effect, or is it strictly related to emission controls?

I haven't been able to find any literature on the carburetion setup in this model...my Bentley manual doesn't have any information on the late Series II. Is there another source?
 
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