Knock sensor (0261231046 Bosch or GT 305) piezoelectric type mounted on the engine block under the intake manifold of the fourth cylinder

Clean all mating surfaces of the block from gaskets stuck and torn during disassembly

Checking and replacing the air flow sensor ZMZ 406

Mass air flow sensor - thermopneumatic type IVKSH 407282000, installed in the intake system after the air filter

Since the hydraulic tensioners keep the chains constantly taut, regardless of chain stretch or shoe wear, there is no need to adjust the chain tension during operation

Removing the right rear door lock

Pry off with a screwdriver and open the door handle plugs

The car's on-board circuit (except for the starter circuit) is powered by two fuses