The engine is one of the most important parts of your vehicle. Auto engines run more efficiently when they are paired with an optimally functioning diesel injector. Rail injectors are typically found in most diesel-fuelled cars. A rail injector performs a series of injections in one combustion cycle. It also feeds fuel at an extremely high pressure, which has benefits such as high fuel efficiency and fewer gas emissions.

However, the highly pressurised system does have its challenges, and the main one is that the system wears out faster than other systems, like port or sequential injectors. Here are the three main reasons why common rail diesel injectors fail.

1. Contamination by Particles

A lot of engine system failures start with failure in other systems. For example, if the filters are not working correctly, they will allow particles to get inside your fuel injector and cause massive damage. The common rail injector is created only to allow very small particles through. Anything larger than this will cause significant damage inside the system.

Most of the time, when large particles get inside the injector, they cause erosion between the ball and the valve. When particles interfere with the seal located between the ball and the valve, the injector's spray pattern alters, which ruins the injection process and engine efficiency in the long run.

2. Incorrect Injector Installation

Most auto mechanics are excellent in handling the simple external repairs in a vehicle. When dealing with engine and engine parts, you have to look for an expert. An unqualified or inexperienced automotive mechanic might make mistakes like failing to install seal rings and nozzle washers properly.

You might not notice these problems when you get your vehicle back from the auto shop, but, eventually, the injector performance will decline, leading to costly repairs.

3. Carbon Deposits

Most motorists don't know that any fuel that is left on the injector when they shut down the engine might still combust. Unfortunately, when this extra fuel burns, it creates dark and sticky carbon deposits or coking. Carbon deposits can build up around the tip of the injector and end up affecting its efficiency.

The common indicators of injector issues include your check-engine light coming on, misfiring, knocking and surging of the engine. You should take your car to a professional auto mechanic for inspection when you notice any of these signs. Sometimes, the best solution is to replace the rail injector. Finally, make sure an expert replaces it to avoid poor installation.

Contact a company that sells auto parts like common rail injectors to learn more.