General Studies · Engine Cooling System
When the engine cools down, what happens in the cooling system to prevent the collapse of the coolant hoses when a vacuum is created?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The water pump stops.
- 2The pressure valve opens.
- 3The thermostat closes.
- 4The vacuum valve opens and allows air to flow into the system.✓
Correct answer
The vacuum valve opens and allows air to flow into the system.
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