The junction of the exhaust manifold with the mating plane of the cylinder head is sealed with a metal gasket.
In the event that the gasket is burned out or the manifold fastening nuts are loosened, exhaust gases can escape through this connection to the outside, which is accompanied by a characteristic sound.
If the defect cannot be eliminated by tightening the exhaust manifold fastening nuts, the gasket must be replaced.
To avoid burns, it is recommended to start work after the exhaust system has cooled down.
We turn off the ignition.
We remove the tips of the high-voltage wires from the spark plugs and take the wires to the side.
Disconnect the block of wires of the control oxygen concentration sensor from the block of the wiring harness of the engine management system (see Removing oxygen concentration sensors).
Removing the catalytic converter (see Removing the catalytic converter).
With a special penetrating liquid, we moisten the nuts securing the exhaust manifold to the cylinder head.
Using the "14" head, unscrew the eight nuts securing the exhaust manifold to the cylinder head.
When performing this operation, the nuts can be loosened together with the studs.
We shift the exhaust manifold along the remaining studs of the cylinder head and remove it up.
Remove the metal gasket of the exhaust manifold.
On the threaded part of the stud screwed into the cylinder head, apply a thin layer of thread sealant.
Further assembly is carried out in the reverse order.
Before installing the exhaust manifold, we clean the mating surfaces of the cylinder head and exhaust manifold from carbon deposits and install a new gasket.
Before tightening the exhaust manifold mounting nuts, apply graphite grease to the cylinder head studs.
Tighten the exhaust manifold mounting nuts to the prescribed torque (see Applications).
Order of an inhaling of nuts of fastening of a final collector