Symptom Chart
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 Jaguar S-Type, 2007 Jaguar S-Type, 2006 Jaguar S-Type, 2005 Jaguar S-Type, and 2004 Jaguar S-Type. However, it is still accessible from the selected car via links, so may be relevant.
Symptom Chart
| Condition | Possible Source | Action |
|---|---|---|
| Difficult to start during hot or cold start | Piston ring(s) worn, damaged, sticking or worn piston/cylinder. | INSTALL a new engine. |
| - | Head gasket damaged. | INSPECT the head gasket. |
| - | Fuel system damaged or inoperative. | Refer to Fuel Charging and Controls article. |
| - | Ignition system inoperative. | Refer to Engine Ignition article. |
| Poor Idling | Restricted exhaust system. | INSPECT the exhaust system. Refer to Exhaust System article. |
| - | Vacuum leak. | CARRY out the Intake Manifold Vacuum Test . REPAIR and INSTALL new components as necessary. |
| - | Burned valve(s). | INSPECT the valve(s). |
| - | Incorrect valve to valve seat contact. | INSPECT the valve and valve seat. |
| - | Head gasket damaged. | INSPECT the head gasket. |
| - | Fuel system damaged or inoperative. | Refer to Fuel Charging and Controls article. |
| Insufficient power | Compression leakage from valve seat. | INSPECT the valve or valve seat. |
| - | Valve sticking. | INSPECT valve stem to valve guide clearance or carbon accumulation. |
| - | Valve spring weak or broken. | INSPECT the valve spring. |
| - | Head gasket damaged. | INSPECT the head gasket. |
| - | Cylinder head cracked or distorted. | INSPECT the cylinder head. |
| - | Piston ring(s) worn, damaged or sticking. | INSTALL a new engine. |
| - | Fuel system damaged or inoperative. | Refer to Fuel Charging and Controls article. |
| - | Brakes dragging. | Refer to Brake System - General Information article. |
| - | Restricted exhaust system. | INSPECT the exhaust system. Refer to Exhaust System article. |
| Excessive or insufficient compression. | Valve(s) burnt or sticking. | INSPECT the valve(s). |
| - | Valve spring(s) weak or broken. | INSPECT the valve spring(s). |
| - | Piston ring(s) worn, damaged, sticking or worn piston/cylinder. | INSTALL a new engine. |
| - | Head gasket damaged. | INSPECT the head gasket. |
| - | Carbon accumulation in combustion chamber. | ELIMINATE carbon build up. |
| - | Fuel system damaged or inoperative. | Refer to Fuel Charging and Controls article. |
| Excessive oil consumption | Piston ring(s) worn, damaged, sticking or worn piston/cylinder. | INSTALL a new engine. |
| - | Valve stem seal worn or missing. | INSPECT the valve or valve stem seal. |
| - | Oil leakage. | REPAIR oil leakage. |
| - | Valve stem or valve guide worn. | INSPECT the valve stem or valve guide. |
| - | Incorrect oil viscosity. | DRAIN and FILL with new oil. |
| - | Diluted oil. | CHECK oil dilution. DRAIN and FILL as necessary. |
| - | Crankcase overfilled. | CHECK and adjust the oil level. |
| - | Incorrect oil pressure. | CHECK the oil pressure. REPAIR as necessary. |
| Engine noise | Excessive crankshaft main bearing clearance. | INSTALL a new engine. |
| - | Excessive crankshaft end play. | INSTALL a new engine. |
| - | Excessive connecting rod bearing oil clearance. | INSTALL a new engine. |
| - | Piston/cylinder worn. | INSTALL a new engine. |
| - | Piston ring damaged. | INSTALL a new engine. |
| - | Connecting rod bent. | INSTALL a new engine. |
| - | Valve spring(s) broken. | INSPECT the valve spring(s). |
| - | Excessive valve guide clearance. | INSPECT the valve guide or valve. |
| - | Cooling system inoperative (water pump, vibration of radiator), | Refer to Refer to Engine Cooling or Supercharger Cooling article. |
| - | Fuel system inoperative. | Refer to Fuel Charging and Controls article. |
| - | Excessive carbon buildup. | ELIMINATE carbon buildup. |
| - | Exhaust gas leakage. | REPAIR leakage. Refer to Exhaust System article. |
| - | Incorrect drive belt tension. | INSPECT the drive belt tension. Refer to Accessory Drive article. |
| - | Generator front bearing worn. | Refer to Generator and Regulator article. |
| Tappet noise, engine running | Incorrect tappet clearance. | CHECK and ADJUST the tappet clearance as necessary. |