Signs and causes of malfunctioning diesel injectors

A malfunction of diesel injectors can usually be detected by the driver himself or the operator of the equipment where this type of engine is installed. It is necessary to pay attention to the operation of the engine.

The first and main signs of a malfunction of diesel injectors.

- Periodic interruptions in the engine. The so-called (triple) of the engine, this is when one or more cylinders in a diesel engine does not work or start to malfunction.

- Black smoke from the exhaust pipe during normal engine operation and without loss of traction. Accompanied by an increase in fuel consumption.

- Decreased engine thrust and increased fuel consumption

- Or all together. Black smoke from the exhaust pipe with a decrease in engine thrust and failure of one or more engine cylinders

This can be said to be one of the main and immediately visible signs of a malfunction of diesel fuel injectors. The first and not so obvious signs of a possible malfunction of the fuel system, which you need to pay attention to and think about passing diagnostics. This is an increase in the oil level in the engine due to fuel ingress, when the engine warms up, there is more exhaust than usual, it is difficult to start when the engine is cold, an uneven number of idling revolutions (revs float)

Causes of failure of diesel injectors.

No matter how trite it may sound, but this is standard injector wear. In this case, they are enough for a long time of 200-300 thousand km. Under ideal conditions. But in our conditions, one of the main reasons for the accelerated wear of diesel injectors is lower quality diesel fuel. Increased sulfur content in the fuel, so to speak (hard) solarium. Which leads to faster wear of injectors and valves. Refuel at trusted gas stations.

There are other reasons why diesel injectors fail. This is the ingress of contaminants into the fuel system. They can be of different nature. These can be chemical or mechanical impurities that can get in when changing filters or repairs (removing and installing a fuel tank or any other components), Condensation in the system (water). Also, water and dirt can get in with frankly bad fuel. Which can lead to very rapid failure of diesel injectors. So when repairing the fuel system, it is best to contact specialists.

Also, nozzles can quickly fail due to the fact that they are fake. Or, during the repair, low-quality components were used to repair the injectors. Such as nozzles, rods or nozzle valves.

In order for your diesel engine to work properly and the fuel system to serve for a long time, like new and after repair. You need to change fuel filters on time. Buy high-quality filters (with a large packing) so that they perform their function, the required amount of time and do not clog. Use additives for diesel fuel. If possible, install additional fuel cleaning systems (separator). Separators are also available with diesel fuel heating, which improves engine performance in winter. And of course, buy high-quality spare parts for a prophetic diesel engine.

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Good luck on the roads!