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Old 05-09-2012, 08:20 AM
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using pcv as a vacuum testing source

Might be a dumb question but since neither my Carb nor intake manifold have a test vacuum port, can I just unplug my pcv and test there? Or will that change vacuum readings?

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Old 05-09-2012, 10:13 AM
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The PCV is a slight vacuum leak to the intake manifold.

So ya it will effect the vac reading a bit.

You could add a T to the PCV hose to allow both the PCV and a vac gauge.

Where are the power brakes getting vacuum from?
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Old 05-09-2012, 12:57 PM
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No power brakes, manual discs/drums. No power steering and no radio either
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