What Statement Is True Concerning Engine Vacuum

question 28

Multiple Choice

What statement is true concerning engine vacuum?

• A) Engine vacuum is not related to engine problems.
• B) The vacuum gauge must be connected to a fitting in the intake manifold.
• C) A rise in vacuum is a sign of a properly operating engine.
• D) Average reading for a properly running engine is approximately 25-30 in. Hg.

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