Step 3 » GENERAL learning environment Category C (C, C1)

GENERAL Learning Environment Category C (C, C1)
Question 405 of 533

What indicates the irregular running of the engine at idle, with misfires in the exhaust and difficult starting, especially in winter?

A the presence of carbon deposits on the exhaust valve;
B the loosening of the engine mounting cushions on the chassis;
C the exhaust muffler is perforated.

Explanation

Explanation text category C / driving quizzes drpciv:
The presence of carbon deposits on the exhaust valve does not allow the valve to close completely and the irregular running of the engine at idle appears, with misfires in the exhaust and difficult starting, especially in winter.
Correct answer: A
 
Driving quizzes drpciv category C explained.

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