Automobile ignition systems rely on perfect timing. A simple spark, when delivered at precisely the right moment, can mean the difference between a smooth running and powerful engine that operates cleanly and an engine that runs rough, lacks power and produces unnecessary emissions. How much do you know about automobile ignition systems?
Question 1 of 10
For an engine to make the best use of the fuel, the spark should occur before the piston reaches the top of what?
Question 2 of 10
The speed of the pistons increases as the engine speed increases. This means that the faster the engine goes, the spark has to occur when?
Question 3 of 10
What is it called when the spark timing is moved closer to the top of the compression stroke?
Question 4 of 10
According to the article, retarding the timing may also eliminate what?
Question 5 of 10
What is the difference between a "hot" spark plug and a "cold" spark plug?
Question 6 of 10
The coil is a simple device -- essentially a high-voltage transformer made up of ______ of wire.
Question 7 of 10
The primary role of the distributor is to distribute high voltage from the ______ to the correct cylinder.
Question 8 of 10
Spark plugs use this to isolate the high voltage at the electrode, ensuring that the spark happens at the tip of the electrode and not anywhere else on the plug.
Question 9 of 10
Spark timing is so critical to an engine's performance that most modern cars use a sensor to tell the engine control unit (ECU) what?
Question 10 of 10