Cause
| Correction
|
Worn valves, valve guides and/or valve stem oil seals
|
- Inspect the spark plugs for oil deposits. Refer to
Spark Plug Inspection
.
- Repair or replace, as required.
|
Improper operation of the positive crankcase ventilation (PCV) system
| Repair or replace, as required.
|
Damaged or worn piston and/or rings
Oil consumption may or may not cause the engine to misfire.
|
- Inspect the spark plugs for oil deposits. Refer to
Spark Plug Inspection
.
- Inspect the cylinders for a loss of compression. Refer to
Engine Compression Test
.
- Perform cylinder leak down and compression testing to determine the cause.
- Repair or replace, as required.
|