Lubrication system malfunctions

The main malfunctions of the lubrication system are:

- increased oil consumption;

- low oil pressure.

Increased oil consumption can be caused by the following reasons:

- wear of cylinders, pistons and/or piston rings;

- worn valve guide bushings or guide bushing o-rings;

- leakage of crankshaft oil seals or other seals on the engine.

Low oil pressure can be caused by the following reasons:

- damage to the pressure gauge (if installed) or its wiring;

- damage to the oil pressure switch or its wiring;

- damage to the pressure reducing valve;

- low oil level;

- clogged oil filter in the crankcase;

- faulty oil pump;

- damaged main or connecting rod bearings.

Warning: If the oil pressure warning light does not turn off immediately after starting the engine, stop the engine immediately. Otherwise, the crank mechanism may jam.