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

GENERAL Learning Environment Category D (D, D1, Tb, Tv)
Question 188 of 485

The sharp uniform metallic noise, during the sudden acceleration of the engine, may be caused by:

A the breaking of the piston pin;
B the miscalibration of the throttle valve;
C malfunctions of the injection pump.

Explanation

Explanation text category D / driving tests drpciv:
The sharp uniform metallic noise, during the sudden acceleration of the engine, is due to the breaking of the piston pin. If the pin breaks (the connecting part between the piston and the connecting rod) a metallic noise appears, especially during sudden acceleration.
Correct answer: A
 
Driving tests drpciv category D explained.

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