Tune-up and Engine Performance Checks: Technical Service Bulletins

• Customer Interest
  • Intake Manifold - Rough Idle After Replacing Gasket
  • Engine Controls - Misfire and Hesitation Over 6000 RPM
  • Water Temperature Switch - Rough Idle
  • Engine - Speed Increases Excessively at Cold Starting
  • Engine - Hard Cold Start
• By Symptom
  • Abnormal wear/deterioration
    • Coolant - Propylene Glycol Based Not Recommended
    • Water Temperature Switch - Rough Idle
  • Customer Interest
    • Intake Manifold - Rough Idle After Replacing Gasket
    • Engine Controls - Misfire and Hesitation Over 6000 RPM
    • Water Temperature Switch - Rough Idle
    • Engine - Speed Increases Excessively at Cold Starting
    • Engine - Hard Cold Start
  • Driveability
    • Air Injection - Rough Idle or Stall After Cold Start
    • Engine - Speed Increases Excessively at Cold Starting
  • Starting problems
    • Engine - Troubleshooting Hard Start After Heat Soak
      • Overview
      • 1.Troubleshooting With Digital Code Checker
      • 2.Fuel Pressure Drop Inspection
      • 3.Engine Compression Check
    • Engine - Hard Cold Start
• All Technical Service Bulletins
  • Intake Manifold - Rough Idle After Replacing Gasket
  • Coolant - Propylene Glycol Based Not Recommended
  • Fuel Injector - Cleaner Kit for Improved Performance
  • Engine Controls - Misfire and Hesitation Over 6000 RPM
  • Water Temperature Switch - Rough Idle
  • Air Injection - Rough Idle or Stall After Cold Start
  • Engine - Troubleshooting Hard Start After Heat Soak
    • Overview
    • 1.Troubleshooting With Digital Code Checker
    • 2.Fuel Pressure Drop Inspection
    • 3.Engine Compression Check
  • Engine - Speed Increases Excessively at Cold Starting
  • Engine - Hard Cold Start
  • Tools - Correct Use of Timing Light on DLI System