Cleaning common rail injectors - methods for cleaning fuel injectors in a diesel engine

The injection system is an extremely important component of a diesel engine. It supplies fuel to the cylinders so that the car can move. The condition of the injectors is very important. For this reason, regular and preventive cleaning of dirt may be required, which will minimize the risk of failure.

Diesel injectors - how does the injection system work?

The task of the injectors is to supply diesel fuel to the combustion chamber. It consists of nozzles, injection pump, high pressure hoses and filters. The system measures the amount of fuel supplied to the engine, reducing fuel consumption and exhaust emissions. This is because it measures the right amount of fuel and delivers it to the engine's cylinders at the right time. There are two types of injections - indirect and direct. Currently, the second of these is the most popular, as it allows access to higher quality fuels. On the other hand, indirect injections improve engine performance, increase noise insulation, reduce carbon deposits and protect the crankshaft bearing.

Injection regeneration - when should you go to the mechanic?

Dirty nozzles are a very dangerous phenomenon. Damage to this element in a diesel engine is manifested by uneven engine operation, difficult starting, and even the inability to start the engine. In addition, the malfunction may manifest itself in increased fuel consumption. Nozzle failure is also often very costly. For this reason, vehicles equipped with a common rail system are more likely to undergo a fuel system cleaning process. It's easiest to buy new injectors, but it may be more economical to replace or clean them, which is safe for the drive.

Cleaning common rail injectors - features

Modern diesel units are characterized by low diesel fuel consumption, reaching a maximum of several liters of fuel per hundred kilometers. In addition, they are characterized by powerful torque, thanks to which the ride is dynamic. All thanks to the Common Rail system. It is responsible for dosing diesel fuel directly into the combustion chamber.

Injection system and individual work steps

Engines equipped with the Common Rail system have an injection independent of the rotation of the crankshaft and the arrangement of the cylinders.. The fuel is transported to the supply battery along a rod or rails (common rail). High pressure is maintained there (up to 1600 bar). The injection itself takes place in 3 stages:

• pre-injection - a pilot dose is introduced, due to which the operation of the car becomes soft and gentle, after which the proper dose is initiated;
• afterburning dose - thanks to it, the drive unit is economical, as it quickly warms up the catalyst, making the work of the particulate filter more efficient;
• the final stage is the diesel fuel from the fuel tank is delivered to the cylinders and as a result you can enjoy a quality ride.

Common Rail Injector Cleaner - How to Clean the Injection System

Investing in new common rail injectors can be out of your budget as this solution comes at a fairly high cost. For this reason, injections should be taken care of in advance. The most common problems are leaky control valves and dosing and spraying errors. The second fault requires chemical cleaning. For this purpose, it is worth using a proven cleaning agent. If you want to clean your injectors, you should purchase Liqui Moly Pro-Line or K2 Diesel Dictum Cleaning Fluid. These are proven chemicals that can handle deposits in the system.

Flushing nozzles with Liqui Moly or K2 Diesel Dictum cleaning fluid

If the engine idling is unstable or smokes black, it is worth giving chemotherapy. Regular cleaning of the injector system is essential because it the engine runs quieter, smoother, smokes less and definitely more dynamic. Dry cleaning is very simple, because you just need to connect the drug to the fuel system or directly to the tank. Using Liqui Moly or K2 Diesel Dictum is an effective way to clean injectors without dismantling them.

The correct dosage of fuel is an extremely important issue in the context of the correct operation of the vehicle. For this reason, it is worth carrying out preventive care for injectors. One of the best ways is to clean the injectors with chemicals like Liqui Moly Pro-Line.