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Chart 13-Lack Of Power

DIAGNOSTIC CHART 13-LACK OF POWER

System & Component(s) Reference
IGNITION 
  • Scope Engine For: Spark Plugs, Wires, Coil, etc.
  • Crossed Wires, Ignition Timing
See BASIC TESTING article.
EEC 
  • EEC-IV Quick Test
See TESTS W/CODES article.
FUEL/THROTTLE BODY 
  • Fuel Filter
  • Fuel Pump
  • Fuel Lines
  • Fuel Pressure Regulator
  • Fuel Sender Filter
  • Injectors
  • Idle Airflow
Perform a visual inspection. See FUEL SYSTEMS in I - SYS/COMP TESTS article.
EXHAUST 
  • Component (Restricted)
Inspect exhaust system.
COOLING 
  • Thermostat
Check cooling system.
VACUUM DISTRIBUTION 
  • Vacuum Leaks
Perform a visual and audible inspection.
AIR INTAKE SYSTEM 
  • Air Cleaner Duct & Element
See I - SYS/COMP TESTS article.
EGR 
  • Valve
See I - SYS/COMP TESTS article.
BASE ENGINE 
  • Compression Check
  • Camshaft
  • Valves
Check Engine Mechanical Condition.
DRIVETRAIN 
  • Clutch, Automatic Trans. Brakes
Check transmission & drivetrain components.