Postal Automotive Technician Verified Multiple Choice and
Conceptual Actual Emended Exam Questions With Reviewed
100% Correct Detailed Answers
Guaranteed Pass!!Current Update
1. Which stroke expels burnt gases?
Exhaust stroke
2. Leaking intake manifold gasket most commonly causes?
Vacuum leak → rough idle/misfire
3. Overheating may result from failure of?
Thermostat, radiator, water pump, or cooling fan
4. Timing belt controls relationship between?
Crankshaft and camshaft(s)
11.Most small gas engines use what ignition system?
Magneto
12.What component generates the spark?
Spark plug
13.What stores electrical energy before releasing to coil?
Capacitor/Condenser
14.Function of ignition coil?
Step up voltage for spark plugs
15.What controls spark timing in modern cars?
Engine Control Module (ECM)
16.Symptom of faulty spark plug wire?
Misfire under load
, 17.Primary sensor for ignition timing?
Crankshaft position sensor
18.What indicates distributorless ignition system (DIS)?
Coil packs instead of distributor
19.Purpose of ignition module?
Switch coil on/off for spark generation
20.Symptom of a bad ignition coil?
Hard starting, stalling, poor acceleration
21.Function of carburetor float?
Maintains fuel level & closes needle valve
22.Diesel fuel ignites by?
Heat of compression
23.Fuel injectors deliver fuel under control of?
ECM (Engine Control Module)
24.Most common cause of poor fuel pressure?
Faulty fuel pump
25.Purpose of fuel pressure regulator?
Maintains consistent pressure to injectors
26.Dirty fuel filter symptom?
Engine hesitation at high speeds
27.Purpose of oxygen (O2) sensor?
Adjusts air-fuel ratio
28.Too rich fuel mixture causes?
Black smoke, poor mileage
29.Too lean fuel mixture causes?
Hesitation, backfiring, overheating
Conceptual Actual Emended Exam Questions With Reviewed
100% Correct Detailed Answers
Guaranteed Pass!!Current Update
1. Which stroke expels burnt gases?
Exhaust stroke
2. Leaking intake manifold gasket most commonly causes?
Vacuum leak → rough idle/misfire
3. Overheating may result from failure of?
Thermostat, radiator, water pump, or cooling fan
4. Timing belt controls relationship between?
Crankshaft and camshaft(s)
11.Most small gas engines use what ignition system?
Magneto
12.What component generates the spark?
Spark plug
13.What stores electrical energy before releasing to coil?
Capacitor/Condenser
14.Function of ignition coil?
Step up voltage for spark plugs
15.What controls spark timing in modern cars?
Engine Control Module (ECM)
16.Symptom of faulty spark plug wire?
Misfire under load
, 17.Primary sensor for ignition timing?
Crankshaft position sensor
18.What indicates distributorless ignition system (DIS)?
Coil packs instead of distributor
19.Purpose of ignition module?
Switch coil on/off for spark generation
20.Symptom of a bad ignition coil?
Hard starting, stalling, poor acceleration
21.Function of carburetor float?
Maintains fuel level & closes needle valve
22.Diesel fuel ignites by?
Heat of compression
23.Fuel injectors deliver fuel under control of?
ECM (Engine Control Module)
24.Most common cause of poor fuel pressure?
Faulty fuel pump
25.Purpose of fuel pressure regulator?
Maintains consistent pressure to injectors
26.Dirty fuel filter symptom?
Engine hesitation at high speeds
27.Purpose of oxygen (O2) sensor?
Adjusts air-fuel ratio
28.Too rich fuel mixture causes?
Black smoke, poor mileage
29.Too lean fuel mixture causes?
Hesitation, backfiring, overheating
