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Old 04-07-2021, 10:03 AM   #6
vdo
FF.Com.Au Hardcore
 
Join Date: Jul 2013
Location: Brrisbane QLD
Posts: 1,184
Valued Contributor: For members whose non technical contributions are worthy of recognition. - Issue reason: Consistently offers competent electrical and technical advice regarding Ford electrics, especially instrument clusters. He's retired but offers his services for repairs for next to nothing. 
Default Re: Cortina TF Ghia 1981

Quote:
Originally Posted by Reno View Post
Thank you VDO never considered the aspect of leakage I am in Brisbane also
Do you do vacuum analysis ?

Rgds

Reno
I don't do analysis. I'm an Instrument and electronics tech.
I know about dash operations functions etc.

The leak will be most likely in the engine bay where the main vacuum feed is, or sometimes the vacuum control switch in the dash could be the culprit.

Listen for hiss sound, (with engine running).
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