Ignition Systems

Voltage induced into the secondary coil windings of an ignition system can reach up to ____ volts.

• 12

• 120

• 600

• 60000

The spark advance system used on late-model vehicles adjust ignition timing using the ____.

• ECM

• ICM

• Engine sensors

• All the above

Which of the following spark plug components causes electricity to jump the gap and return to the battery through the frame ground?

• Shell.

• Insulator.

• Side electrode.

• Center terminal.

A cylinder that is not burning fuel on the power stroke is called a(n) ____ cylinder.

• Missing

• Skipping

• Leaning

• Dead

An engine cranks but will not start. A spark test shows a good, strong spark. Technician A says that the no-start problem could be caused by fouled spark plugs. Technician B says that a fuel system problem is the likely cause. Who is right?

• tech a

• tech b

• both

• neither

The deposits on a properly burning spark plug should be ____.

• Brown

• White

• Black

• Grey

While conducting a secondary wire resistance test, Technician A states that wire resistance should be approximately 12,000 ohms per foot. Technician B says that resistance should be about 50,000 ohms maximum for long spark plug cables. Who is right?

• tech a

• tech b

• both

• neither

Timing advance is usually set several degrees before TDC.

• true

• false

The throttle position sensor reports engine rpm information to the vehicle’s computer.

• true

• false

Firing order of the cylinders is sometimes cast into the metal of the intake manifold.

• true

• false