THE ULTIMATE GUIDE HOW TO
Periodic inspection of the spark plugs is an uncomplicated but extremely important method for engine diagnostics. The working part of the spark plugs (vortect or any other engine)- the electrodes between which a high-voltage spark is formed, are located directly in the combustion chamber and collect on the surface all the "traces" of the work of the power unit. The presence of certain deposits experienced motorist can tell about potential problems with the motor. One of the most disturbing symptoms is the presence of oil on the candle.
Where will oil get on
The engine is designed to provide the necessary tightness of cooling and lubrication systems. Liquids circulate in their contours and cannot get into the combustion chamber. That is why traces of oil on the spark plug already initially speaks about certain problems. In this case, it is strongly recommended not to continue operating the vehicle, but to immediately turn to auto mechanics. Tightening the repair is fraught with deterioration of the motor condition and can lead to its complete jamming due to poor lubrication.
Oil leaks are associated with impaired tightness of those components and systems where it is provided for constructively. In this case, the lubricant may leak:
In the first case, the problem should be looked for in the wrong gaskets: cylinder heads or an oil filter. The second is not visually determined. It is to control possible leaks in the cylinders and applied diagnostics spark plugs.
Reasons for immediate diagnostics.
In addition to periodic inspections of the spark plugs, there are situations in which diagnostics should be carried out immediately:
For greater reliability, it is recommended to perform diagnostics on a new spark plug - their ideal (without traces of work) surface makes it possible to notice even the slightest traces of oil on the spark plug thread.
On a candle can be:
These symptoms (increment) indicate the degree of destruction of sealing elements. With a small amount of oil, the car troits and “shoots”; with large quantities, it often stalls or does not start at all.
Causes of oil falling on spark plugs
There are several engine assemblies from which oil leaks into the chamber can potentially arise:
Each of these problems is serious enough and can cause major repairs. In order not to aggravate the “losses”, it is not worth delaying with a more detailed diagnosis of the mechanic.
There are 2 main categories of spark plugs, they are shared by:
Producers give a recommendation that the spark plugs need to be replaced during a maintenance plan and this is somewhere in the 10 000 to 15 000 kms - count of the run.
Experienced drivers believe that the time for replacing the spark plugs comes after after 20 0000 or 30 0000 km of run. Manufacturers recommend to change spark plugs every 15 000- 20 0000 km, and iridium and platinum spark plugs once in 100 000 kilometers. Small cars need to be replaced more often, approximately from 7 000 to 10 000 kilometers of run.
There are also situations like burning out spark plugs due to low-quality gasoline, in this situation the driver feels the wear of spark plugs, as the engine starts to work nervously and crawl falls.
There is also a category of drivers who forget to change spark plugs and ride on them from 40 000 to 80 000 kilometers, while not thinking that riding on worn-out spark plugs is much heavier. The car loses its power, the gasoline consumption becomes bigger, and in the winter time the engine starts becoming very difficult.
Before professional diagnosis, you can independently check spark plugs. You can listen to or not give out strange sounds of your engine, also look at the spark plug, if the removal of a spark plug does not cause you significant worries.
First of all you need to pay attention to the gap of the electrode and to the scum. On all spark plugs there is a marking, they have information about the gap of electrodes, namely the last digit in the marking, it is indicated in millimeters. If the clearance is more than 8 millimeters or the last digit in the marking, this means that the spark plug need to be changed urgently.
On spark plugs there should not be scrub, as they are self-cleaning when properly burned. If on ignition spark plugs there is a black or white scrub, it is necessary to turn to diagnostics.
If you do not intend to use spark plugs immediately after chemical treatment, process the metal parts of the product with WD40 and place them in plastic packaging. The fact is that some cleaning chemicals affect, in addition to soot, and on the constituent elements of parts, because of which they can form rust.
Spark plug - consumables, with one-time. If unscrewed, then it is better to screw in the new one already, the sealing ring is not designed for multiple unscrewing / screwing in, it is likely that it will penetrate. But, it’s only my own opinion. In case you interested in other ways to clean your spark plug, here you have it.
Spark Plug Cleaning Techniques
There are four ways to clean spark plugs:
Ultrasonic cleaning involves the removal of deposits on the electrodes by placing the spark plug skirt in a special bath with cleaning fluid, and exposure to it with ultrasound. This method has long been used at service stations for cleaning nozzles. Its efficiency is quite high, but the cost of such services often exceeds the cost of a new set of spark plugs.
Sandblasting equipment is used, the spark plug is fixed on a special bracket, and its working elements are exposed to a jet of air with fine particles of sand or other abrasive substances.
This technique is usually used if almost new spark plugs turned out to be poured during cold start. It is a pity to throw out, so they resort to dry them. There is two ways to do that:
Chemical cleaning is the only correct way to get rid of soot on the electrodes of spark plugs at home. It is absolutely not expensive, neither in time nor within its means. The essence of the method is in the effect of various kinds of chemicals on deposits.
The main malfunctions are an open circuit and a leakage of current. An electric circuit breaks at the junction of the metal contact of the wire with the conductive core and other parts of the ignition system.
Main causes of spark plugs wires go bad
1. Current leakage
Current leakage occurs through contaminated wires, plugs, distributor cap and ignition coil, as well as damage to the insulation and wire caps, so their dielectric properties deteriorate during operation.