
Possible pump malfunctions may include: leakage of the diaphragm and valves, decreased elasticity or breakage of the diaphragm spring, wear of pump drive parts

The gas distribution mechanism requires periodic adjustment of the gaps between the rocker arms and valves, which should be performed on a cold engine after a mileage of 16,000 km
The durability of a repaired engine largely depends on its running-in on a stand and the operating mode of the car during the first 1000 km