1999 Volvo Penta "WT" Models Workshop Manual, Page 15Get this manual

1999 Volvo Penta "WT" Models Workshop Manual, Page 15

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Intake Manifold Vacuum Testing _._ Test Procedures
Test Results
1A steady vacuum reading between 18 and 22 inHg(60,7-74,3 kPa) at idle indicates an engine in good mechanical condition2A va

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