Virtually any car engine malfunction can be prevented by producing it timely diagnosis. Most of the upcoming problems can only identify a specialist, but something can determine the simple car enthusiast. Moreover, the quality of the domestic auto industry of any of the happy owners of the car reincarnates in the car mechanic, and not the most recent category.

Diagnosis for rumor

The initial diagnosis of the engine of the car should be carried out by ear, pre-warming the power unit to the operating temperature of 90 degrees.

If there are extraneous noise, the knocks should be pre-convicted that they are from the engine.

Completely foreign sound occurs due to the engine of the bolt rejected and fallen into the pallet.

Also vibrate and from this produce outsider the noise of the pendant, exhaust system, protection and much more.

All this, of course, should be determined initially.

Next should be repelled from the character of sounds and their places of appearance.

Wake-up noises, knocks, born in the upper part of the power unit, as a rule, originate in the valve mechanism.

Signaling about the need to adjust it.

Increasing noms with an increase in engine revolutions - increased valve clearance, rumbell wear or valve pushers rods.

It is also possible to wear the most camshaft.

Sounds in front of the power unit wearing riseling and increasing revolutions, a sign of a bad tension of the chain or other problems with it connected.

This is if you remember the classics.

In more modern models, the timing belt also has enough sounds of signals about faults in this area.

To creak and squeeze the tensioning roller, tap and roll up the belt itself about the protective casing.

As for the sounds more unpleasant to the owner, these are noises with less frequency and tone than "valve".

They are usually from the head of the engine or the lower part of it.

Signal such sounds about wear piston.

A strong knock, which is likely to accompany the flashing light bulb of the oil pressure sensor - the signal of the worn indigenous liners or the liner of the lower head of the connecting rod.

Wearing a root bearing will cause a real screen when the engine is loaded under load.

The dubbed flywheel will cause bitter sounds when switching gear.

Such sounds precede the inevitable overhaul of the power unit.

Metal sounds with a sharp increase in the revolutions of the power unit, the fuel system or launch failure.

There may be anything from the early ignition (most likely) to poor fuel quality.

The poor quality of flammable is also a frequent phenomenon, which is accompanied by a tanning "check" on the display of the onboard computer.

Diagnostics by exhaust

In the color and smell of exhaust gases, you can also define a lot.

A black shade of exhaust with the smell of fuel is a releasing mixture, which indicates the incorrect operation of the fuel system.

The blue shade of the gases smelling to the same garge, signs of oil entering the combustion chambers.

Whatever to make sure this is short enough to postpone the oil level.

There will be overrun.

Increasing the smoke while increasing revolutions, and the normal level at idle, the signal to the replacement of oil recovery caps.

Smoking "For constant" - problems in a piston group.

As an option, running the rings.

If the power unit is already far from new, it is possible to wear a piston or rings.

When carrying out the diagnosis of spent gases, steam with smoke should not be confused, so we can detect malfunctions only on the engine operating temperature.