We remove the exhaust manifold when replacing gaskets, also when repairing the cylinder head

Preparing the car for repair work.

We install the car on a viewing ditch or on a lift.

Disconnect the negative terminal from the battery

Removing the exhaust manifold Nissan Almera with K4M engine

From the bottom of the car, we unscrew and remove the protection of the power unit (article - Removing the protection of the Nissan Almera power unit)

Removing the exhaust manifold Nissan Almera with K4M engine

Disconnect the downpipe from the manifold.

To do this, use a 14 key to unscrew the two nuts securing the intake pipe (Figure 2).

Removing the exhaust manifold Nissan Almera with K4M engine

Remove the springs from the studs (the nut may come loose with the stud)

Removing the exhaust manifold Nissan Almera with K4M engine

Remove the exhaust pipe flange from the exhaust manifold flange and remove the spherical ring from the exhaust manifold flange

Removing the exhaust manifold Nissan Almera with K4M engine

The bottom of the exhaust manifold supports a bracket attached to the cylinder block (Figure 5, shown with wheel drive removed).

Removing the exhaust manifold Nissan Almera with K4M engine

With a 16 head or a spanner wrench, unscrew the nut 1 and bolt 2, fastening the bracket to the cylinder block

Removing the exhaust manifold Nissan Almera with K4M engine

Remove the manifold mounting bracket

Remove the air filter housing.

Removing the exhaust manifold Nissan Almera with K4M engine

With a 10 head, we unscrew five bolts securing the upper heat shield.

Before unscrewing, we moisten the threads with WD-40 penetrating fluid, or brake fluid.

Removing the exhaust manifold Nissan Almera with K4M engine

Remove the control oxygen concentration sensor (if the exhaust manifold needs to be replaced).

To do this, disconnect the block of the wire harness to the sensor.

Removing the exhaust manifold Nissan Almera with K4M engine

We pass the 22 spanner through the wire.

Removing the exhaust manifold Nissan Almera with K4M engine

Unscrew the oxygen concentration sensor

Removing the exhaust manifold Nissan Almera with K4M engine

Remove the oxygen concentration sensor from the exhaust manifold hole.

Wet the collector mounting nuts with penetrating liquid WD-40 or kerosene

Removing the exhaust manifold Nissan Almera with K4M engine

With a head of 10, we unscrew the nine nuts securing the exhaust manifold flange to the cylinder head

Removing the exhaust manifold Nissan Almera with K4M engine

Remove the collector assembly with the lower heat shield

Removing the exhaust manifold Nissan Almera with K4M engine

Remove the exhaust cylinder gasket

Removing the exhaust manifold Nissan Almera with K4M engine

If the collector is to be replaced, then unscrew the five nuts securing the lower heat shield and remove it.

Before mounting the collector, we clean all surfaces and inspect the parts.

Before tightening the manifold nuts, apply graphite grease to all manifold studs.

Tighten the manifold fastening nuts sequentially from the center to the edge.

The nuts should be tightened to a torque of 18 Nm.

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