Cause
| Correction
|
Low oil pressure
|
• | Repair or replace as required. |
|
Improper valve lash adjustment
|
• | Repair or replace as required. |
|
Improper lubrication to the valve train
| Inspect the following components, and repair or replace as required:
• | The oil filter bypass valve |
• | The oil pump and pump screen |
• | The engine block oil galleries |
|
Broken valve spring
| Replace the valve spring.
|
Stretched or broken timing belt and/or damaged sprocket teeth
| Replace the timing belt and sprockets. Refer to
Timing Belt Replacement
.
|
Worn engine camshaft lobes
|
• | Inspect the engine camshaft lobes. |
|
Worn valve guides or valve stems
| Inspect the following components, and repair as required:
|
Stuck Valves
(Carbon on the valve stem or valve seat may cause the valve to stay open)
| Inspect the following components, and repair as required:
|