
An external sign of wear on the valve stem seals is the short-term appearance of blue smoke from the exhaust pipe after starting the engine, as well as when braking the engine after a long drive under load

The piston of the 1st cylinder is set to the position of the top dead center (TDC) of the compression stroke so that when carrying out work related to the removal of the timing chains, the installation of the gas distribution phases is not disturbed