Whenever you are aware of abnormal signs on your automobile, you are right to be intrigued, because a car represents a huge annual budget and unpredicted breakdowns don’t reduce the bill. So what if you sense that you have a leaking injector on your Renault Vel Satis? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or strange black smoke. These three manifestations are the main indicators of a leaking injector. As this problem can produce more critical engine concerns on your car, we chose to publish this article content to help you confirm the failure of a leaking injector and handle it properly. To accomplish this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Renault Vel Satis.
Leaking injector on my petrol Renault Vel Satis
It is essential 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 Renault Vel Satis: The different leaks
It should be said that injector leaks on a Renault Vel Satis 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 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 portion that is connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may encounter a leak coming from the lower part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Renault Vel Satis
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Renault Vel Satis: The different leaks
In the case of leaking diesel injectors on your Renault Vel Satis, there are three several kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform over time, usually the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Renault Vel Satis will be brought on by 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 encounter an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we recommend you to read this article content on the presence of oil leaking on your Renault Vel Satis.
Leaking injector on my Renault Vel Satis, 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 associated, as we have seen prior to this, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is conducted…
- Masking 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 frequently be restricted to replacing the seals that have failed:
- Find out the source of the leak
- Take apart the injector in question
- Change 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 necessarily very hard, but if you have the smallest hesitation in the treatment of your injector that leaks on your Renault Vel Satis, we recommend you to get closer to your mechanic to avoid any bad manipulation that could seriously harm the condition of your Renault Vel Satis.
If you wish more guides on the Renault Vel Satis, go to our Renault Vel Satis category.
