Technical Tips > Pre 84

Lack of vacuum

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bfit:
Dale
Why not get a gauge an measure just what vacumn your engine is developing .
My guess is your brakes are working and a 80 modle would have a booster in most cases.
So try a gauge and you will know where you are at .
Then you can start to eliminate the posibilities .
Oh it's not unusual to find the vacumn tank has a hole  or two in it
Bfit 
Ps as a Matter of interest Dale 
What colour is the inside of you're exhaust
It's a bit of an indicator of how your engine is running

sirfixalot:
For the headlites to pop up tells me you are loosing vacuum to the control valve diaphragm. There is obviously vacuum at the bellows to make the lites go up. my guess would be the vacuum feed for control valve diaphragm is connected between  the non return valve & engine

Dale:
Thanks guys for all the input, I am printing this out and taking the car to an excellent auto electrician and A/C guy, he teaches at Tech.
I will let you know what the outcome was for future reference and anyone else having similar issues.

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