Multiple choice general knowledge

Diesel Engines have more Spark plugs than a similarly spec'd petrol engines.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diesel engines do NOT have spark plugs at all. They use compression ignition where fuel ignites spontaneously due to the high temperature from compressed air, not from a spark. Petrol engines require spark plugs to ignite the fuel-air mixture. So diesel engines have zero spark plugs, which is fewer than any petrol engine (typically 4, 6, or more spark plugs depending on cylinders).

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