Question

two techs are discussing running compression tests. technician a says that the test involves quickly snapping the throttle open while watching the compression gauge. technician b says that the test involves squirting oil in the cylinder just before performing the test. who is correct? select one: a. technician a b. technician b c. both a and b d. neither a nor b

Explanation:

• Technician A is incorrect. Snapping the throttle open while watching the compression gauge is not a standard part of a compression test.
• Technician B is correct. Squirting oil in the cylinder (wet compression test) is a valid part of diagnosing engine compression issues. It helps determine if low compression is due to piston rings (if compression increases with oil) or valve - related issues (if compression does not increase).

Answer:

b. Technician B