Oil Consumption or Spark Plugs Oil Fouled

OIL CONSUMPTION OR SPARK PLUGS OIL FOULED

Possible Causes
1. PCV system malfunction.
2. Worn, scuffed or broken rings.
3. Carbon in oil ring slot.
4. Rings fitted too tightly in grooves.
5. Worn valve guides.
6. Valve stem seal unseated or defective.

Correction
1. Check system. Clean and repair, as necessary, Refer to Powertrain Management/Emission Control Systems/Positive Crankcase Ventilation/Testing and Inspection.
2. Hone cylinder bores. Install new rings.
3. Install new rings.
4. Remove the rings. Check grooves. If groove is not proper width, replace piston.
5. Ream guides and replace valves with oversize valves and seals.
6. Repair or replace seal.