A Guide to Fuel Injector Cleaning

The purpose of fuel injector cleaning is to remove the fuel varnish deposits and contaminants that clog injectors. They need periodic cleaning for optimal operation. Usually, fuel injector cleaning every 25,000 to 30,000 miles.

Fuel injector cleaning not only improves functionality but also improves engine performance, improve fuel economy.

One good thing in fuel injector cleaning is you can do it by yourself, without the help of a mechanic. if the injector is badly clogged, you may need to take mechanic help. Let's take a look at the different methods used in the cleaning.

Using fuel injector cleaning kits

The cleaning kit is available at any car store. Before connecting, locate the fuel injector and take measures to prevent fuel from entering the injectors. Use the tube to bypass the fuel injector, so the fuel returns to the tank or by removing the fuel pump and blocking the fuel return line, then disconnect the fuel pressure regulator.

Connect the cleaning kit to the fuel input port then remove the fuel cap of the tank to release pressure in the tank that may build by the cleaning kit. Open the kit's valve till its pressure value match to the injection pressure value. (understand concept available in car manual)

Once the kit reaches the required pressure value, then start the engine so that the cleaning solvent passes from the kit through the injector and removes the dirt that clogged the fuel injector. It will take a few minutes. After this, switch off the engine, remove the kit and reconnect the fuel lines, fuel pump, and fuel pressure. Now, see the difference in engine performance.

Add cleaner additives to the fuel

It also called deposit-control additives, to the fuel helps to control the dirt in the fuel tank. These additives help reduce the volatility of the lighter components. Though the fuel from gas stations do contain certain additives, some suppliers may not add the required amount of additives. some even use low cost, less effective alternatives. So, you need to add additional additives to fuel.

One of the commonly used best additives is polyether amine (PEA). it is a bit expensive as compared to others, it is proved to be effective in keeping the injectors, valves and combustion chamber clean.

Precautions:

● Make sure to disconnect pressurized fuel connection.

● Ensure there are no fuel leaks or high-pressure solvents in the engine while it is operating because solvents are highly flammable.

● Wear safety goggles for eye protection.

● Close open sources of ignition such as sparking plugs.

● Only use the cleaning kits specific to fuel injector cleaning. Do not use other cleaners like carburetor cleaner, brake cleaner, etc.

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