Engine Performance One Pre/Final

The ignition system must also be able to advance or retard the timing of the spark, based on engine conditions such as ________, speed, and driver input. 

• Timing 

• Stroke 

• Load 

• Cross 

Tech A says that as engines gain miles, the spark plug gap increases, which raises the ignition system's available voltage. Tech B says that misfire occurs when required voltage is higher than available voltage. Who is correct? 

• Tech A

• Tech B 

• Both A and B

• Neither A nor B 

As the throttle is opened and the engine load ________, the spark does not need to be advanced as much, because there is more pressure in the cylinders and the engine is not spinning very fast. 

• Decreases 

• Increases 

• Stays the same

• None of the above 

Eliminating the distributor meant doing away with the last mechanical component of the ignition system, which again resulted in ________ and reduced maintenance issues. 

• Reduced reliability 

• Increased reliability 

• Increased wear 

• Reduced emissions standards 

he ________ is used to connect the ignition system to the battery during operation and disconnect it from the battery to turn the engine off. 

• Distributor cap

• High-tension lead

• Ignition switch

• Engine

Tech A says that ignition coils are essentially transformers. Tech B says that the primary side of the coil delivers the high voltage spark that is necessary to jump the plug gap. Who is correct? 

• Tech A

• Tech B

• Both Techs A and B

• Neither Tech A nor B

When battery voltage pushes current through the primary windings of an ignition coil, a magnetic field is created. 

• True 

• False

The hottest part of the spark plug is the:

• ground electrode

• insulator

• center electrode. 

• . metal shell

The ________ of the contact breaker points assists in the rapid collapse of the ignition coil's magnetic field. 

• Opening

• Closing

• Ignition switch

• None of the above

In a contact breaker point ignition system, the ________ provides a source of energy. 

• Battery

• Ignition switch

• Ignition coil

• Capacitor