Exam 70: Ignition System Diagnosis and Service

During cranking, most pickup coils should produce a minimum of ________.

What testing device is shown in this illustration?

The spark plug threads in the cylinder head should be cleaned using a(an) ________ before installing new plugs.

Two technicians are discussing a no-start condition. During cranking, a magnet held over the coil moves and the engine backfires at times. Technician A says that a bad pickup coil or CKP sensor is the most likely cause. Technician B says that an open coil primary is the most likely cause. Which technician is correct?

Camshaft variation as displayed on a scan tool on an engine with a distributor-mounted CMP sensor should be plus or minus (±) ________ degrees.

What term describes the order that the spark reaches the cylinders?

A vehicle with an electronic ignition system (EI) has a loss of power with no engine misfiring. Technician A that says the base ignition timing may need to be adjusted. Technician B says that the exhaust system may be restricted. Who is right?

Which sensor produces a digital signal?

Which of the following could cause oil fouled spark plugs?

Typical secondary coil resistance specifications usually range from ________ ohms

A distributor ignition (DI) system has a Hall-Effect type pickup trigger. Technician A says that this type of pickup may be tested with an ohmmeter. Technician B says that this type of pickup produces an analog voltage signal. Who is right?

A no-start condition is being discussed on an engine equipped with a waste spark ignition system.Technician A says that a bad CKP (crankshaft position) sensor could be the cause. Technician B says that an open spark plug wire could be the cause. Who is right?

A coil is being checked, with the following results. What does the reading mean?

Technician A says a that a voltmeter can be used to monitor the output signal of an optical sensor. Technician B says that optical sensors should be tested with an oscilloscope because of the sensor's speed. Which technician is correct?

Typical primary coil resistance specifications usually range from ________ ohms.

Technician A says that indexing the distributor is the same as setting ignition timing. Technician B says that a distributor that is not phased correctly can cause a misfire and rough idle. Who is right?

All of the following statements are correct EXCEPT ________.

Technician A says that primary windings should have higher resistance. Technician B says that secondary windings should have higher resistance. Which technician is correct?