Diagnostic Test

CHECKING THE ENGINE MECHANICAL SYSTEM
1. Turn the ignition off.
2. Check for any of the following conditions/mechanical problems:
  - AIR INDUCTION SYSTEM - must be free from leaks and restrictions
  - ENGINE VACUUM - must be at least 13 inches in neutral
  - ENGINE VALVE TIMING - must be within specifications
  - ENGINE COMPRESSION - must be within specifications
  - ENGINE EXHAUST SYSTEM - must be free from leaks and restrictions
  - ENGINE OIL - must be clean, at the proper level, free from contamination or fuel
  - ENGINE PCV SYSTEM - must flow freely
  - TORQUE CONVERTER STALL SPEED - must be within specifications
  - POWER BRAKE BOOSTER - no internal vacuum leaks
  - FUEL - must be free of contamination
  - FUEL INJECTOR - plugged or restricted injector(s); control wire not connected to the correct injector
  - CAM LOBES - must not be worn excessively
  - CYLINDER LEAKAGE TEST - must be within specifications
  - VALVE SPRINGS - cannot be weak or broken
  Were any problems found?
  
  Yes
  - Repair as necessary in accordance with the Service Information.
  - Perform the PCM VERIFICATION Test. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Test Complete.