2018-02-14
254
Exercise 1. Read and memorize using a dictionary:
| additive; coolant; crankcase; evaporation; gauge reading; head gasket; heat exchanger; internal combustion engine; leak; loop; rust; spark plug; |
Exercise 2. Answer the questions:
1) How much does a gallon of gasoline produce heat energy when it is burned?
2) What does an efficient cooling system require?
3) What is needed to keep the cooling system in good operating condition?
4) What is the reason for checking the coolant level regularly?
5) What does it mean when the system does not hold pressure?
Exercise 3. Match the left part with the right:
| 1. A tight system should hold the maximum rated pressure for at least | a) have found an internal leak. |
| 2. If the system does not hold pressure, you | b) evaporation from the reservoir. |
| 3. Most vehicles will lose a little coolant over time due to | c) the O2 sensor. |
| 4. The silicate corrosion inhibitors in conventional antifreeze will poison | d) two minutes with no drop in the gauge reading. |
Exercise 4. Open brackets choosing the right words: If no leaks are (lost/found), the loss of coolant may be due to long-term neglect or a temporary episode of overheating. Has your engine (overheated/cooled) recently? A defective cooling fan, slipping drive belt, exhaust restriction or even overloading the engine may have (dropped/caused) the system to get too hot and boil over.
