Symptom Chart
WARNING: This page is about a different car, the 2002 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART
| Condition | Possible Sources | Action |
|---|---|---|
|
Damaged ignition system. | Refer to the IGNITION SYSTEMS for the procedure. REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . |
| Damaged fuel system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Damaged starting system. | Refer to STARTERS . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Damaged charging system/battery. | REFER to GENERATORS & REGULATORS . | |
| Burnt valve. | INSTALL a new valve. | |
| Worn piston. | INSTALL a new piston. | |
| Worn piston rings. | INSTALL new piston rings. | |
| Worn cylinder. | REPAIR or INSTALL a new cylinder block. | |
| Damaged head gasket. | INSTALL a new head gasket. | |
| Damaged cooling system. | Refer to ENGINE COOLING . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV. | |
|
Vacuum leaks. | Repair as necessary. |
| Malfunctioning or damaged ignition system. | Refer to VACUUM DIAGRAMS - TRUCKS . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Malfunctioning or damaged fuel system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Damaged valve tappet or lash adjuster. | INSTALL a new valve tappet or lash adjuster. | |
| Damaged valve tappet guide or lash adjuster. | INSTALL a new valve tappet guide or valve tappet. | |
| Incorrect valve-to-valve seat contact. | REPAIR or INSTALL a new valve or valve seat. | |
| Damaged head gasket. | INSTALL a new head gasket. | |
|
Malfunctioning or damaged fuel system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . |
| Malfunctioning or damaged ignition system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Malfunctioning or damaged air intake system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Damaged valve tappet or lash adjuster. | INSTALL a new valve tappet or lash adjuster. | |
| Damaged valve tappet guide or valve tappet. | INSTALL a new valve tappet guide or valve tappet. | |
| Burnt or sticking valve. | REPAIR or INSTALL a new valve. | |
| Weak or broken valve spring. | INSTALL a new valve spring. | |
| Carbon accumulation in combustion chamber. | ELIMINATE carbon buildup. | |
|
Leaking oil. | REPAIR oil leakage. |
| Malfunctioning PCV system. | REPAIR or INSTALL new necessary components. | |
| Worn valve stem seal. | INSTALL a new valve stem seal. | |
| Worn valve stem or valve guide. | INSTALL a new valve and valve guide. | |
| Sticking piston rings. | REPAIR or INSTALL new piston rings. | |
| Worn piston ring groove. | INSTALL a new piston and piston pin. | |
| Worn piston or cylinder. | REPAIR or INSTALL a new piston or cylinder block. | |
|
Leaking exhaust system. | REPAIR exhaust leakage. |
| Incorrect drive belt tension. | REFER to SPECIFICATIONS & DRIVE BELT ROUTING . | |
| Malfunctioning generator bearing. | Refer to GENERATORS & REGULATORS . | |
| Malfunctioning water pump bearing. | REFER to ENGINE COOLING . | |
| Malfunctioning or damaged cooling system. | REFER to ENGINE COOLING . | |
| Malfunctioning or damaged fuel system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Loose timing chain/belt (6268). | ADJUST or INSTALL a new timing chain/belt. | |
| Damaged timing chain tensioner (6L266). | INSTALL a new timing chain tensioner. | |
| Excessive main bearing clearance. |
CAUTION:
Remove the cylinder heads before removing the crankshaft. Failure to do so can result in engine damage. ADJUST clearance or INSTALL a new crankshaft main bearing (6333). |
|
| Seized or heat damaged crankshaft main bearing. | INSTALL a new crankshaft main bearing. | |
| Excessive crankshaft end play. | INSTALL a new thrust bearing or crankshaft (6303). | |
| Heat damaged connecting rod bearing (6211). | INSTALL a new connecting rod bearing or connecting rod (6200). | |
| Excessive connecting rod bearing clearance. | INSTALL a new connecting rod bearing. | |
| Damaged connecting rod bushing (6207). | INSTALL a new connecting rod bushing. | |
| Worn cylinder. | REPAIR or INSTALL a new cylinder block (6010). | |
| Worn piston (6108) or piston pin (6135). | INSTALL a new piston or piston pin. | |
| Damaged piston rings. | INSTALL new piston rings. | |
| Bent connecting rod. | INSTALL a new connecting rod. | |
| Malfunctioning valve tappet (6500) or lash adjuster. | INSTALL a new valve tappet or lash adjuster. | |
| Excessive valve tappet or lash adjuster clearance. | ADJUST clearance or INSTALL a new valve tappet guide or valve tappet. | |
| Broken valve spring (6513). | INSTALL a new valve spring. | |
| Excessive valve guide clearance. | ADJUST clearance or INSTALL a new valve guide (6510) or valve. | |
|
Malfunctioning or damaged ignition system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . |
| Malfunctioning or damaged fuel system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Malfunctioning or damaged air intake system. | Refer to SYSTEM & COMPONENT TESTING - EEC-V - GASOLINE . REFER to SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV . | |
| Damaged or plugged exhaust system. | INSPECT exhaust system. | |
| Incorrect tire size. | Repair as necessary. | |
| Dragging brakes. | REFER to BRAKE SYSTEM - GENERAL INFORMATION . | |
| Slipping transmission. | Refer to the appropriate TRANSAXLE/TRANSMISSION article. | |
| Malfunctioning valve tappet or lash adjuster | INSTALL a new valve tappet or lash adjuster. | |
| Damaged valve tappet guide or valve tappet. | INSTALL a new valve tappet guide or valve tappet. | |
| Compression leakage at valve seat. | REPAIR or INSTALL a new valve, valve seat or cylinder head (6049). | |
| Seized valve stem. | INSTALL a new valve. | |
| Weak or broken valve spring. | INSTALL a new valve spring. | |
| Worn or damaged camshaft. | INSTALL a new camshaft. | |
| Damaged head gasket (6051). | INSTALL a new head gasket. | |
| Cracked or distorted cylinder head. | INSTALL a new cylinder head. | |
| Damaged, worn or sticking piston ring (s). | REPAIR or INSTALL a new piston ring(s). | |
| Worn or damaged piston. | INSTALL a new piston and piston pin. |