- Open the filler cap and check the sealing gasket for porosity and damage.
- Check the ventilation hose for secure fastening at the filler cap and air filter.
- Cylinder head cover seals.
- Cylinder head seal.
- Place of connection of the ignition distributor flange.
- Oil filter seal: Oil filter bracket flange on the cylinder block and oil filter flange on the bracket.
- hydraulic switch (o-ring).
- drain plug (o-ring).
- Oil pan sealing gasket.
- The point of attachment of the gearbox to the engine (sealing gasket at the flywheel or at the gearbox shaft).
- Camshaft, intermediate and crankshaft seals (from the timing belt of the engine).
Since oil usually spreads over a large area in case of leaks, it can be quite difficult to determine the location of the leak at a glance. When searching for leaks, it is advisable to proceed as follows:
Wash the engine. Spray the engine with a standard cleaning agent and after a while wash everything off the engine with a jet of water. Cover the ignition distributor and the generator with plastic wrap.
Sprinkle connections and seals on the outside of the motor with chalk or talcum powder.
Check the oil level, top up if necessary.
Carry out an inspection trip. Since the oil becomes liquid in a hot engine and therefore flows out faster at leaks, it is recommended that the test drive be carried out over a section of about 30 km on a highway.
In conclusion, inspect the engine using a lamp, find leaks and troubleshoot.
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