Step 3 » GENERAL learning environment Category D (D, D1, Tb, Tv)

GENERAL Learning Environment Category D (D, D1, Tb, Tv)
Question 255 of 485

The appearance of some gas bubbles in the expansion tank, when accelerating the engine, indicates:

A the burning of the head gasket;
B the high temperature of the coolant;
C the blocking of the thermostat.

Explanation

Explanation text category D / driving tests drpciv:
The appearance of some gas bubbles in the expansion tank, when accelerating the engine, indicates the burning of the head gasket. If the head gasket burns, the oil can enter the coolant and vice versa.
Correct answer: A
 
Driving tests drpciv category D explained.

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