ENGINE DIAGNOSIS - INTRODUCTION

This section can be helpful in determining the causes of malfunctions not detected and remedied by routine maintenance.

These malfunctions are classified as Performance (e.g., engine idles rough and stalls) or Mechanical (e.g., a strange noise).

(Refer to 09 - Engine - Diagnosis and Testing) - PERFORMANCE and (Refer to 09 - Engine - Diagnosis and Testing) - MECHANICAL for possible causes and corrections of malfunctions. Refer to 14 - FUEL SYSTEM for the fuel system diagnosis.

Additional diagnosis and testing procedures may be necessary for specific engine malfunctions that can not be isolated with the Service Diagnosis charts. Information concerning additional tests and diagnosis is provided within the following diagnosis:

• Cylinder Compression Pressure Test (Refer to 09 - Engine - Diagnosis and Testing)
• Cylinder Combustion Pressure Leakage Test (Refer to 09 - Engine - Diagnosis and Testing) .
• Engine Cylinder Head Gasket Failure Diagnosis (Refer to 09 - Engine/Cylinder Head - Diagnosis and Testing) .
• Intake Manifold Leakage Diagnosis (Refer to 09 - Engine/Manifolds/MANIFOLD, Intake - Diagnosis and Testing) .