When bleeding air from a cooling system, the technician should:

When bleeding air from a cooling system, the

Multiple choice — select the best answer

AOpen the bleeder valve with the engine at operating temperature
BOpen the bleeder valve only when the engine is cold
CNever open the bleeder valve with the engine running
DFill the system completely before starting the engine

✓ Correct answer: A. Open the bleeder valve with the engine at operating temperature Opening the bleeder valve while the engine is running at operating temperature allows air to escape as the thermostat opens and coolant begins to circulate fully through the system.

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When bleeding air from a cooling system, the technician should:

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