Which of the following is not a common cause of preignition?
A)faulty ignition coil
B)incandescent carbon deposits in the combustion chamber
C)faulty cooling system
D)too hot of a spark plug

Question

Quizplus · Accepted Answer

Preignition is typically caused by factors that lead to the air-fuel mixture igniting before the spark plug fires. A faulty ignition coil, which is responsible for generating the spark, does not cause preignition but can lead to other ignition problems. Incandescent carbon deposits, a faulty cooling system, and too hot of a spark plug can all create conditions conducive to preignition by increasing combustion chamber temperatures or creating hot spots.

Which of the Following Is Not a Common Cause of Preignition