Pinpoint Test D: External Oil Leaks
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Possible Sources
- Oil supply tube
- Oil return tube
- Gaskets
- Turbocharger
- NOTE: It is very unlikely for the turbocharger to leak engine oil externally. The moving parts of a turbocharger that require oil are contained in a housing with no external sealing surfaces. Pressurized engine oil is supplied to the turbocharger from the engine through an oil supply tube and drains back to the engine sump through an unpressurized return tube. The most likely source of an external oil leak would be from the oil supply or oil return tubes or the gaskets and seals.
- D1 CHECK THE OIL SUPPLY TUBE
- Perform an oil leak inspection. REFER to: Oil Leak Inspection - Gasoline . Visually inspect the oil supply tube for traces of oil. Check the engine and the turbocharger ends. Check for oil running down from other areas of the tube or the engine to locate the source of the leak. Check the oil supply tube gaskets and seals.
- Movement of the vehicle, under hood components or gravity can cause oil leaks to appear in different areas from the source of the oil leak. Follow the trace of the oil leak to the source.
Is the oil supply tube leaking oil?
Yes INSTALL a new oil supply tube. REFER to: Turbocharger Oil Supply Tube LH . or REFER to: Turbocharger Oil Supply Tube RH . No GO to D2 - D2 CHECK THE OIL RETURN TUBE
- Visually inspect the oil return tube for traces of oil. Check the engine and the turbocharger ends. Check for oil running down from other areas of the tube or the engine to locate the source of the leak. Check the oil return tube gaskets and seals.
Is the oil return tube leaking oil?
Yes INSTALL a new oil return tube. No CARRY OUT an oil leak inspection. REFER to: Oil Leak Inspection - Gasoline . or REFER to: Oil Leak Inspection - Diesel . Check for an engine oil leak.