Starting Systems


1. The ratio between the number of teeth on the starter motor pinion gear and the engine flywheel is about

1 to 1.
1 to 5.
1 to 20.
1 to 50.


2. The basic purpose of the overrunning clutch in the starter drive is to:

assist the solenoid during cranking.
pull the starter pinion gear out of mesh.
disengage the armature when the engine starts.
keep the hold-in winding energized during cranking.


3. A clutch safety switch is:

located in the motor feed circuit.
closed when the clutch pedal is pressed all the way to the floor.
in series with the control circuit.
both b and c.


4. The small (S) terminal on the starting-motor solenoid is connected to the:

starter control circuit.
starter load (battery) circuit.
both a and b.
both neither a nor b.


5. The magnetic field required for starting motor operation is provided by the:

armature assembly.
field-winding assembly.
none of the above.


6. A solenoid uses two coils. Their windings are called:

push-in and pull-out.
pull-in and push-out.
push-in and hold-out.
pull-in and hold-in.


7. A basic starter control circuit energizes the magnetic switch through the ignition switch and the:

neutral start switch.
starter over-running clutch.


8. An open fault in the hold-in winding of a starter solenoid switch will most likely cause:

the battery to run down.
the solenoid to move in and out, or chatter.
the starter drive to remain engaged after the engine is running.
excessively high current draw from tthe starter .


9. If the engine cranks too slow to start, the problem may be caused by:

engine problems.
a faulty neutral start switch.
an open relay in the control circuit.
a damaged pinion gear.


10. If the starter spins but does not crank the engine, the likely cause would be:

a bad overrunning clutch.
a bad solenoid.
high resistance in the motor feed circuit.
high resistance in the motor control circuit.


11. All of the following can cause noisy starter motor operation except

misalignment of the starter motor.
worn bushings.
grounded armature.
damaged or worn flywheel ring gear.


12. When performing a starter current draw test, high current draw usually indicates:

a discharged battery.
high resistance.
battery terminal corrosion.
engine problems or a bad starter


13. A starter current draw test indicates lower than specified cranking speed and current. The next step is:

replace the starter solenoid, it is defective.
run a voltage drop test of B+ and ground cables.
test the battery.
to use the 9.6 volt drop test for a tight engine.


14. Cranking circuit voltage drop tests are used to locate:

high resistance.
bad starter drive units.
weak batteries.
a short in the starter motor.


15. A test light shows that voltage is not being applied to a starter solenoid "S" Terminal with the ignition switch turned to the start position. Technician A says the ignition switch could be bad. Technician B says the neutral safety switch could be bad. Who is correct?

Technician A only.
Technician B only.
both Technician A and Technician B.
neither Technician A nor Technician B.


16. With the engine cranking, a 4-volt drop is measured across the starter insulated (B+) battery cable. What should be done?

nothing, this voltage drop is acceptable.
install a larger battery.
replace the cable or clean and tighten the connection.
charge the battery.


17. When the starting motor will not crank the engine or cranks it too slowly, the first thing to check is the a:

wiring and cables.
starting motor.


18. When testing the starting system on a vehicle with a six-cylinder engine, you find that the engine cranks slowly, the starter current draw is 80 amps, and the battery voltage during cranking is 11.5 volts. What should you do next?

check the voltage drop of the starter motor circuit.
test the battery capacity.
replace the starter motor.
check the engine.


19. When checking the starting motor's insulation circuit

the higher the voltage reading, the better.
the lower the voltage reading, the better.
both a and b.
neither a nor b.


20. The voltage drop on the insulated side of the starter motor circuit should be no more than.

battery voltage.
0.1 volt.
0.2 volt.
0.5 volt.


21. A starter on a vehicle is to be tested for current draw while cranking the engine. Technician “A” says the battery’s state-of-charge and capacity must be tested before a valid starter test can be performed. Technician “B” says that if a battery has less than a 75% charge (specific gravity 1.230 or less) it cannot be used for a starter current draw test. Who is correct?

replace Technician A only.
Technician B only.
Both Technicians A and B.
Neither Technicians A nor B.




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