Random Vacuum Line - Wot?

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slomofo

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Found this while rummaging behind an oil soaked 300tdi lump.

Tee’d off the Master Cylinder Brake Vacuum Hose and ends with a screw stuck, in the end - but where would it have gone to?

Thoughts on the usual postcard….
D0A521CD-EF76-4695-9FF8-CDD07BB300A4.jpeg
 
The air recirculate valve on the early discovery on the heater used vacuum source to operate it,
This came from the T piece you showed, it probably had a blanking plug over the end from the factory that has been lost so substituted with a screw, ( probably Land Rover being cheap and using parts for two vehicle types)
It won’t be for a vacuum gauge as it won’t tell you anything about the engine only the amount of vacuum for the brakes, ( useless info)
 
Sussed it, thanks @JimS. My late 300tdi has a crudely disabled EGR system - this small pipe ran to the modulator valve on the bulkhead, the ECU is still intact but the EGR valve is gone. New top intercooler hose going on later!
 
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