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Good read here on using vacuum gauge to diagnose engine issues: http://www.gregsengine.com/using-a-vacuum-gauge.html
12" is very low, expected is 17"-21" at sea level, expect 1" drop per 2,000ft altitude, so unless you are at 10,000ft it is low
US Route 34 does get to 12,000ft above sea level, so wouldn't be a good place to test vacuum, results would be skewed.
12" is very low, expected is 17"-21" at sea level, expect 1" drop per 2,000ft altitude, so unless you are at 10,000ft it is low
US Route 34 does get to 12,000ft above sea level, so wouldn't be a good place to test vacuum, results would be skewed.
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