QuestionJune 30, 2025

Technician A says that when using propane to identify a leak, the engine idle will smooth out when a leaking area has been identified. Technician B says that when using propane to identify a leak, the engine idle will increase. Who is correct? a. Technician A b. Technician B c. Both Technician A and Technician B d. Neither Technician A nor Technician B

Technician A says that when using propane to identify a leak, the engine idle will smooth out when a leaking area has been identified. Technician B says that when using propane to identify a leak, the engine idle will increase. Who is correct? a. Technician A b. Technician B c. Both Technician A and Technician B d. Neither Technician A nor Technician B
Technician A says that when using propane to identify a leak, the engine idle will
smooth out when a leaking area has been identified. Technician B says that when using
propane to identify a leak, the engine idle will increase. Who is correct?
a. Technician A
b. Technician B
c. Both Technician A and Technician B
d. Neither Technician A nor Technician B

Solution
4.7(368 votes)

Answer

c. Both Technician A and Technician B Explanation 1. Analyze Technician A's Statement Propane is used to identify vacuum leaks. When propane is introduced near a leak, it gets sucked into the engine, causing the air-fuel mixture to become richer. This can smooth out the idle if the mixture was previously too lean. 2. Analyze Technician B's Statement Introducing propane into a vacuum leak can also cause the engine idle speed to increase due to the enrichment of the air-fuel mixture.

Explanation

1. Analyze Technician A's Statement<br /> Propane is used to identify vacuum leaks. When propane is introduced near a leak, it gets sucked into the engine, causing the air-fuel mixture to become richer. This can smooth out the idle if the mixture was previously too lean.<br /><br />2. Analyze Technician B's Statement<br /> Introducing propane into a vacuum leak can also cause the engine idle speed to increase due to the enrichment of the air-fuel mixture.
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