It is hardly ever pleasant to perceive an injector noise on your Volvo V50. It is a noise that comes up frequently, usually when you accelerate or your engine is idling. However, this sign may be relating to different sort of concerns with your automobile injectors. It may not be anything major, but when a frequent noise appears, you have to be sure. Especially since replacing your Volvo V50’s injectors can be costly. That’s why our team decided to compose this content page in order to help you see more clearly, learn about the different possible failures and distinguish your problem. To do this, we will first look at the normal function and usefulness of the injectors in your Volvo V50, then at the possible reasons from which an injector noise may come.injector-noise-volvo-v50

Attributes of the injectors

Injectors are a very useful part of the operation of your engine unit. They were launched to the modern vehicles about 20 years ago. Before their appearance, more conventional carburettor-type intake systems were employed, which handled the intake of air and fuel into the engine cylinders. With the injectors, manufacturers now have the opportunity, thanks to the injectors pump, to control electronically each stage of the intake process very accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data collected from the various sensors equipping the automobile (engine temperature, acceleration level, engine speed, etc.). Their purpose is therefore to inject under high pressure a precise quantity of an air/fuel mixture at a perfect timing to get the best possible combustion in the cylinders.

The different origins of a clicking or knocking noise coming from the injectors of your Volvo V50

Discovering injector noises on your Volvo V50 may come from different locations, we will now focus on the potential causes of these. Generally, the typical noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be implemented to eliminate them. If you perceive another clicking noise but it is not from your injectors, we encourage you to examine this content page about clicking noise on Volvo V50 to locate the cause.

The causes for injector clicking or knocking noise Volvo V50

A clicking or knocking noise from your injectors can be explained for different causes. In fact, the injectors of your Volvo V50 have three main tasks, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to facilitate its combustion. Then, its mission is to control the air/fuel dosage and finally the homogeneity of the mixture, always with the goal of improving combustion. If one of these three attributes is modified, the main functionality of the injectors will be disrupted and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders due to bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will trigger thoses knocking or clicking noises on your Volvo V50. The main cause of these trouble generally comes from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible obstruction will inevitably result in a malfunction of the injector. If after checking, this noise comes from another part of the engine of your Volvo V50, browse this content page for more informations.

The repercussions of injector noise on Volvo V50

Now that we have analyzed the different reasons for injector noise on your Volvo V50, we will end by stating the possible effects of malfunctioning one or more of your injectors. Whether only one is blocked, or broken, or your entire fuel rail is involved, you cannot escape these consequences which can fairly quickly become considerable….
First, you risk destroying your exhaust unit in the long run, because the unburned fuel residues that will end up in your exhaust system can corrode the metal in it.
One of the most regular consequences noticed by drivers is a significant loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will undoubtedly have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will fairly quickly damage your cylinders or pistons and your engine may tighten.
Here are three little suggestions to limit the risks connected with your injectors and protect you from engine failure:

  • Do not drive at the bottom of the tank, as you may absorb impurities
  • Use quality fuel
  • Think of swapping your diesel fuel filter regularly>