Oil Seal Leakage at Turbine End of Turbocharger
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM TROUBLESHOOTING - OIL SEAL LEAKAGE AT TURBINE END OF TURBOCHARGER
| Possible Causes | Remedies |
|---|---|
| Excessive pre-oiling | No action required (oil will burn away) |
| Excessive pressure in crankcase | Diagnose and correct as necessary. |
| Restricted turbocharger oil drain line | Clean and remove restriction or replace oil drain lines as necessary. |
| Sludge or coked deposits in center housing | Inspect restriction in oil feed and oil drain lines for turbocharger, replace if necessary. Inspect the engine oil condition, replace oil and filter if necessary. Inspect engine oil pressure, repair as necessary. Inspect oil cooler for proper function, replace if damaged or plugged. Replace turbocharger. |
| Turbocharger bearings, bearing bores, or shaft journals worn | Replace turbocharger. |
| Engine malfunction (excessive piston blow-by or high internal crankcase pressure) | Diagnose and correct as necessary. |
| Crankcase over-filled | Adjust oil level in crankcase to proper level. |