Can I test idle vacuum with just a vacuum pump/gauge?
03-21-10, 07:16 PM
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Can I test idle vacuum with just a vacuum pump/gauge?
All I have is a hand pump with a gauge on it. If I hook that up to one of the vacuum nipples at idle, will it read the manifold vacuum?
03-21-10, 08:27 PM
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Not for tuning, I just want to see how much vacuum my engine is pulling at idle. Do you know what's a normal reading for a 13B with mild street port?
03-22-10, 03:03 PM
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I connected the gauge to the nipple where vacuum switch connects, and it read about 17in. Is that good or bad? Oh and when I disconnected the vacuum lines from that nipple, it was hissing and sucking in air, but it didn't actually seem to affect my idle at all. Why is that?
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