Why Do They Fail ? Oil Leaks



Price Range: Call for a advice & price

As turbochargers can spend at over 240,000 rpm and have to endure temperatures of 950°, oil leaks can lead to very expensive repairs. The turbocharger relies on a thin film of oil that lubricates the bearings on the turbine shaft. This oil is kept in place by seals at each end of the turbocharger, behind the turbine and compressor wheels of the bearing housings.

The seals are not like normal oil seals, but are more similar to this brings. They need a positive air pressure inside the compressor and turbine to keep oil lubricating the bearings and preventive seeping into the end housings. A restriction on the inlet side will create a vacuum that will pull oil pasta seals at the compressor and housing. If the engine idle for long periods, the Turbo will rotate at very low speed with correspondingly low air pressure. The resulting vacuum will cause oil to seep into the turbine housing. Any of these situations will result in insufficient oil reaching the turbine bearings.

So what causes oil leaks at the compressor end?


  • A blocked or restricted air intake filter
  • A locked or restricted air intake pipe or hose
  • Air leaks on intake hoses or at the intercooler


And what causes oil leaks at the turbine and?


  • A leaking exhaust system
  • A leaking EGR system


What would cause oil leaks at both ends of the turbocharger?


  • Any restriction in the oil drainpipe from the Turbo to the engine
  • A restriction in the engine breather
  • Physical damage to the Turbo is rotating parts, and excessive bearing clearance
  • Repeated hot engine shutdowns, leading to carbon deposits building up in the centre housing
  • The incorrect Turbo being fitted


To prevent turbo failure caused by oil starvation


  • Ensure there are no blockages or restrictions in the air and oil systems
  • Ensure the run, no leaks and exhaust system

Request a Quote

Have you considered a response chip
Copyright (c) 2009 TurboPACS | Click to view our Terms / Privacy Details
Latest News
Click for more details
Ford Transit Remap Responsechip Power & Economy

Transit Responsechip Tuning At Turbo PACS...
Click for more details
Turbo Technical Advice At TurboPACS 0191-3863422

Turbo Hlep Line at Turbo PACS Durham...
Click for more details
Turbo ? Not Sure ? Turbopacs can help With Route Cause Assesmen

Reconditioned Turbos,New Turbos,Hybrid Turbos. Not Sure ? Turbopacs can help Route Cause Assesmen...
Click for more details
Fault Diagnosis Turbo Replacement & Repairs In Durham

Turbo Charger Repairs and Replacements At Turbo PACS in Durham...
Click for more details
Free Bike Dyno Power Runs At Turbopacs

Free Bike Dyno Power Runs At Turbopacs in Durham...
Click for more details
Clutch Repair ? Clutch Replacment ? Call The Experts Now

Clutch Repairs and Clutch Replacement at Turbo PACS in Durham...
Click for more details
Mazda DPF Removal At Turbo PACS

Mazda 6 DPF Removal. No More DPF Engine management lights......
Click for more details
Vauxhall 1.9 CDTi 150 BHP Offer

Astra 1.9 CDTi Remap At Turbo PACS In Durham. Choose the experts when it comes to upgrading your veh...
Click for more details
Champagne Taste Lemonade Pockets ! A MUST READ

DPF Removal and Remaps. Whats really going on out there ?...