External inspection of oil leaks (BMW 5 Series E34)

In case of an engine covered with oil and increased oil consumption, determine the places of oil leakage. To do this, check the engine in the following places:

Open the filler cap and check the gasket for cracks or damage.

Crankcase ventilation: Ventilation hoses from the crankcase to the camshaft housing and from the camshaft housing to the air manifold housing.

Cylinder head cover gasket.

Cylinder head gasket.

Location of connection of the ignition distributor flange.

Oil Filter Gasket: Between the oil filter and the flange.

Oil drain plug (gasket).

Oil pan gasket.

Connecting the engine to the gearbox (flywheel or gearbox shaft gasket).

Since the leaking oil is spread over a large surface area of the engine, leaks are not visible at first glance. When searching for a leak, it is recommended to:

Wash the engine. Spray the engine with a suitable cleaner and after a short time of action, rinse the engine with clean water. First cover the ignition distributor and generator with plastic bags.

Sprinkle talc on the joints and gaskets on the engine.

Check the oil level and top up if necessary.

Take a test drive. Since the oil liquefies on a warm engine and penetrates through leaks faster, drive at least 30 km on the highway.

Inspect the engine with a portable lamp, locate the leaks and eliminate them.

[The original article is posted on the resource «bmwman.ru»]