During a Compression Test, a Cylinder Shows Lower Readings Than

question 32

Multiple Choice

During a compression test, a cylinder shows lower readings than expected. Technician A squirts a tablespoon of oil into the cylinder and the compression raises. He says this indicates a problem with the rings. Technician B says a running compression test should be about one-quarter of that of a cranking compression test. Which technician is correct?

• A)Technician A
• B)Technician B
• C)Both technicians
• D)Neither technician

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