In the event that you are informed of irregular symptoms on your automobile, you are right to be intrigued, because a car represents a big annual budget and sudden malfunctions don’t lower the bill. So what if you find that you have a leaking injector on your Kia Rio 3? You probably figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or strange black smoke. These three signs of illness are the main symptoms of a leaking injector. As this failure can bring on more critical engine complications on your car, we chose to produce this article to help you validate the failure of a leaking injector and treat it properly. To do this, we will initially check out the circumstance of gasoline injectors and then at those of diesel injectors Kia Rio 3.


Leaking injector on my petrol Kia Rio 3

It is important to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two sort of engines makes the injection different. The main difference lies in the pressure experienced by the injectors, on a petrol engine it will vary between 3.5 bars for indirect injection and 120 bars for indirect injection.

Leaking injector on a petrol Kia Rio 3: The different leaks

It should be mentioned that injector leaks on a Kia Rio 3 equipped with a petrol engine are pretty rare. This is caused by the much lower pressure in the petrol intake systems. Nevertheless, there are two sort of leaks:

  • Leakage from the top of the injector:
    It is plausible that you have a leak from the top of the injector, this is the component that is linked to the fuel rail, an O-ring will be involved in this.
  • Leak injector of the lower part:
    Finally, you may encounter a leak coming from the lower portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen previously.

Leaking injector on my diesel Kia Rio 3

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure produces very high pressure in the engine, as do the injectors. On these models, the pressure is more than 10 times higher than on the direct injection of car petrol engines, reaching 1800 to 2000 bars.

Leaking injector on diesel Kia Rio 3: The different leaks

In the circumstance of leaking diesel injectors on your Kia Rio 3, there are three different sort of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform with time, in most cases the leak will be at the clamping point.
  • Injector return leakage:
    As its name implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Kia Rio 3 will be a consequence of an O-ring or its plastic tip that leaks.
  • Injector base leak:
    This injection leak is one of the most bothersome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should feel an air noise and a compression loss.
  • If after verifying you have oil leaking but it does not come from your injectors, we suggest you to browse this article on the existence of oil leaking on your Kia Rio 3.

Leaking injector on my Kia Rio 3, how to fix the leak

And finally, we’re going to check out how to fix a leaking injector on your car. Frequently a leak is connected, as we have seen prior to this, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some measures:

  • Lower the pressure before any work is carried out…
  • Covering you to avoid the risk of fuel spillage
  • NEVER work on a running diesel engine injector.

Relating to the repair part of your leak, it will oftentimes be limited to replacing the seals that have failed:

  • Locate the source of the leak
  • Dismantle the injector in question
  • Replace the corresponding seal kit
  • Reassemble the assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.

In all situations, these interventions are not specifically difficult, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Kia Rio 3, we suggest you to get closer to your repair shop to avoid any bad handling that could significantly harm the condition of your Kia Rio 3.

If you want more tutorials on the Kia Rio 3, go to our Kia Rio 3 category.