In cases where you are informed of irregular signs on your automobile, you are right to be intrigued, because a car represents a big annual budget and unforeseen breakdowns don’t lower the bill. So what if you feel like you have a leaking injector on your Dacia Sandero? You likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or unconventional black smoke. These three symptoms are the main indicators of a leaking injector. As this troubles can end up in more serious engine complications on your car, we decided to write this article content to help you confirm the failure of a leaking injector and handle it properly. To achieve this, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Dacia Sandero.
Leaking injector on my petrol Dacia Sandero
It is vital to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two kind of engines makes the injection different. The essential difference lies in the pressure undergone 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 Dacia Sandero: The different leaks
It should be noted that injector leaks on a Dacia Sandero equipped with a petrol engine are pretty rare. This is caused by the much lower pressure in the petrol intake systems. However, there are two kind of leaks:
- Leakage from the top of the injector:
It is conceivable that you have a leak from the top of the injector, this is the component that is attached 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 part of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Dacia Sandero
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system creates 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 Dacia Sandero: The different leaks
In the circumstance of leaking diesel injectors on your Dacia Sandero, there are three several kind of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform after a while, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Dacia Sandero 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 annoying, it is the junction between the engine and the injector nose that leaks at a copper seal, you should find an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we advise you to browse this article content on the existence of oil leaking on your Dacia Sandero.
Leaking injector on my Dacia Sandero, how to fix the leak
And at last, we’re going to look at how to fix a leaking injector on your car. Very often a leak is linked, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is completed…
- Masking you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Concerning the repair part of your leak, it will oftentimes be limited to replacing the seals that have failed:
- Discover the source of the leak
- Dismantle the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all situations, these interventions are not automatically difficult, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Dacia Sandero, we advise you to get closer to your auto mechanic to avoid any bad handling that could critically harm the condition of your Dacia Sandero.
If you have any additional questions about the Dacia Sandero, do not hesitate to consult our Dacia Sandero category.
