THE ULTIMATE GUIDE HOW TO
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.