CDL · CDL general knowledge
Which of these is the right way to deal with an engine that is overheating?
Correct answer: Wait until a pressurized cooling system cools before you remove the radiator cap.
Answer options
- AFinish the trip first if the engine overheats within 25 miles of your destination.
- BWait until a pressurized cooling system cools before you remove the radiator cap. Correct
- CKeep driving an overheated engine until it cools down by itself.
Why
A hot cooling system is under pressure, so removing the cap can release scalding steam and coolant that cause serious burns; let it cool first. An overheating engine is a reason to stop as soon as it is safe, not to keep going until the trip is over.
About this question
Topic: CDL general knowledge License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of Winter, Hot Weather and Wind (12 questions). Take the full set and check your score.
Practice Winter, Hot Weather and WindMore questions from Winter, Hot Weather and Wind
- The cooling system of your engine is hot. At what point can you safely open the radiator cap?
- What is true about tires when you drive in very hot weather?
- What is true about operating a vehicle in cold weather?
- When strong winds are blowing, which of the following is correct?
- Strong winds hit while you are driving. What is the best response?
- When is a strong wind most likely to push your vehicle out of its lane?
- After a long run on a hot day, your tire pressure reads higher than normal. Which statement is accurate?
- Which of the following is sound advice about tire chains?
Practice on your phone.
Practice here in your browser, or use the app with the same questions and explanations. It's free on the App Store.