20 14 Bora begins in the winter morning. What is the noise? There is no noise when the car is hot.

Second: See if the water tank is frozen.

Third: When starting, you'd better step on the gas pedal.

Fourth: You should wait for the bus to heat up and then put it in gear.

Fifth: the thermostat is best not to be restricted.

The answer is for reference only, please check it professionally!