MAINTENANCE and LIGHT REPAIR
LESSON
ENGINE PERFORMANCE
 
1 Research applicable vehicle and service information, vehicle service history, service precautions, and technical service bulletins. P-1

Identifix

Alldata

 
 
2 Perform engine absolute (vacuum/boost) manifold pressure tests; determine necessary action P=1    
 
3 Perform cylinder power balance test; determine necessary action. P-2    
 
4 Perform cylinder cranking and running compression tests; determine necessary action. P-1    
 
5 Perform cylinder leakage test; determine necessary action. P-1    
 
6 Verify engine operating temperature. P-1    
 
7 Remove and replace spark plugs; inspect secondary ignition components for wear and damage. P-1    
 
Computerized Engine Controls
 
1 Retrieve and record diagnostic trouble codes, OBD monitor status, and freeze frame data; clear codes when applicable. P-1    
 
2 Describe the importance of operating all OBDII monitors for repair verification. P-1    
 
Fuel, Air Induction, and Exhaust Systems
 
1 Replace fuel filter(s). P-1    
 
2 Inspect, service, or replace air filters, filter housings, and intake duct work. P-1    
 
3 Inspect integrity of the exhaust manifold, exhaust pipes, muffler(s), catalytic converter(s), resonator(s), tail pipe(s), and heat shields; determine necessary action. P-1    
 
4 Inspect condition of exhaust system hangers, brackets, clamps, and heat shields; repair or replace as needed. P-1    
 
5 Check and refill diesel exhaust fluid (DEF). P-3    
 
1 Inspect, test, and service positive crankcase ventilation (PCV) filter/breather cap, valve, tubes, orifices, and hoses; perform necessary action. P-2    
Emissions Control Systems
 
1 Inspect, test, and service positive crankcase ventilation (PCV) filter/breather cap, valve, tubes, orifices, and hoses; perform necessary action. P-2