Running a newHvac vacuum line thru firewall

hotcobra03

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Has anyonever ran a vacuum thru firewall..

My hvac line is blocked causing all air directly out defroster. .

I tapped into boost line to confirm it will operate with vacuum .

I had done heater core years ago but don't recall how lines came thru ..I can feel them but they don't slide in and out easy..

I recall a foam seal on heater core tube on firewall..

Was wondering if anyone has ran a new vacuum line..and found a spot different that's easy
 

Soap

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Easiest spot will for sure be the foam around the HC ports. That is where both other vacuum lines pass through. Lots of space and easy to work.

--Joe
 

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