
If a constant knock of valves is heard when the engine is idling, the hydraulic bearings of the drive levers are faulty. Replace defective hydraulic bearings

The ignition distributor sensor (1908.3706) is installed on the ZMZ-402 engine - contactless, with a sensor (generator) of control pulses and built-in vacuum and centrifugal ignition timing controllers

Removal and installation of the cylinder head can be found in the article - Replacing the cylinder head gasket of the VAZ-2126 engine

Before disconnecting hoses and electrical wires, it is recommended to mark them so as not to confuse them during assembly