How is piston ring decoking done?

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

Piston ring decarbonization is the process of removing carbon deposits accumulated on the piston walls, that is, coke deposits that form as a result of the combustion of the fuel-air mixture during engine operation.

The essence of this process is the loosening of deposits and their further elimination. To do this, some use special tools, buy auto chemicals and place it in the cylinders through the spark plug holes. Others turn to a car service in a panic, spending a huge amount of money on service stations (how much such services cost, we will find out at the end of the article). Today we would like to consider the most effective and efficient way, thanks to which you can independently remove all deposits from the cylinders.

First, the decarbonization of the piston rings begins with the unscrewing of the candles. Next, we need to put all the pistons in the middle position. To do this, we take a jack and raise the front (if it is rear-wheel drive - rear) part of the car, turn on the fourth gear and scroll the engine by the wheel, determining the position of the pistons using a minus screwdriver through the spark plugs.holes.

At the next stage, the decarbonization of the piston rings is accompanied by the filling of a special "SURM-decarbonization". It should be poured into the piston holes through the spark plug holes. This is best done with a medical 10-ml syringe. It is enough to apply 25 milliliters of liquid to one cylinder. Since most passenger cars have 4-cylinder engines, a 100 ml bottle will be just enough for us.

Next, wait 15-20 minutes until the soot becomes loose. It is advisable at this time to ensure that the liquid accurately hits the rings. To do this, you can move the piston up and down and turn the suspended wheel 5-10 degrees. You need to do this for all 15 minutes, until the solution finally processes the surface.

After this, do-it-yourself decarbonization of the piston rings is accompanied by the removal of the central high-voltage wire of the distributor cover. The detached part should be fixed between the steel tip and the mass with a gap of 5-10 millimeters. If this is a VAZ of the “classic” family, an insulating cap can be placed between the valve cover and the gasoline hose bracket. What is it for? This is necessary so that when the engine is scrolled by the starter, there are no breakdowns of the ignition coil.

Now, when the wires are in a frozen state, we turn off the car from the gear and within 10 seconds we make the engine scroll with the starter. In this way, we will eject the remaining liquid from the cylinders.

All,piston ring decarbonization has come to an end. Now it remains to collect all the parts back and make a test run of the engine while pressing the gas pedal.

Do you know how much such decoking of piston rings costs at the service station? The price for such services is very high - about 3 thousand rubles for a four-cylinder gasoline engine.