The work of the engine is carried out due to the fuel mixture, in time entering the combustion chamber. If there is extraneous noises in this process, in particular a knock, then these are signs that signal a violation of the efficiency of the motor department.

Engine valve car

The top arrangement of the valves has the main timing systems.

In them, the main structural element is the DVS valve.

His work complements the rods, pushers and rocker.

The adjustment of the valves "is engaged" camshaft.

The principle of operation is due to the interaction of elements.

When the shaft is rotated, cams, carrying out motion, affect the pusher, observing a certain sequence.

It follows its lift, in parallel, the rod is risen.

In turn, it puts pressure on the shoulder of the rocker inside, which rotates and activates intake and outlet channels, also at a given sequence.

The head of the cylinder is their location.

Outsided noise in the engine

The perpetrators of the appearance of foreign sounds can be various problems. First of all, there is an increase in revolutions, with a weak oil pressure level.

Also on the appearance of noise affect the gaps that increasingly contribute to this.

The simplest reason is the wear or failure of the component mechanism.

Diagnostics are valve providing input and output of fuel. It will be necessary to ensure the proper level of pressure so that the operation of the mechanism is not interrupted and corresponded to the standards.

To this end, the viscosity level of the oil must satisfy weather conditions.

In winter, for example, the indicator in question must be reduced.

If the engine is not enough, then the knock is present in a consequence of significant wear of the pushers.

Such mechanisms, due to contamination, or leak, prevent the oil supply to the device, which contributes to the occurrence of sound.

In the case of a diesel engine, the recovery passes through their configuration.

Adjusting valve gaps

If the reason is not in the pressure of the oil, it is necessary to dismantle the lid and make sure the state of the gaps.

When increasing them, a knock appears contributing to the consecutive failure of component parts.

Here it is more expedient to be adjusted.

It is carried out by means of special probes in the form of plates.

If the camshaft is located on top, the devices are placed in a gap formed by the pusher and cam.

With its standard location, the plates are inserted into the gap between the upper edge of the rod and the rocker.

Depending on the car manufacturer and the engine compartment, the noise level is different.

There is a direct dependence of the number of valves and the strength of the knock.

The more details wearing, the more stronger.

For the means of hydraulic pushers, the clearance is normal on an ongoing basis, which contributes to the absence of noise during operation.

Maintenance GRM

To increase the stability in the operation of the MRM, the valve cleansing is necessary. After a long operating car, the valves turn the residual product layer (Nagar).

This prevents the establishment of normal performance.

Periodic cleaning is performed to eliminate this phenomenon.

Elements of the device are also checked, since the worn parts contribute to the increase in the gap, consequently, the appearance of sound support.

Curved rod or unfit spring are prerequisites for the formation of knocks.

Raising the number of revolutions, sometimes there is a slight tapping, which resembles blows about a metal object.

The reason for this phenomenon is detonation.

Its occurrence is due to a violation in the ignition settings, during the operation of a low-fuel mixture.

At the same time, a nagar appears in the combustion chamber.

For obstruction, such phenomena should more often conduct an inspection of the engine department for operation.

If the technical inspection is constantly, then the consumption of fuel decreases, and the formation of noise is not supposed.