In the event you are alert of abnormal symptoms on your car, you are right to be preoccupied, because a car represents a big annual budget and surprising malfunctions don’t reduce the expenses. So what if you think that you have a leaking injector on your Citroen Ds5? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or unusual black smoke. These three signs of illness are the main indicators of a leaking injector. As this problem can end up in more critical engine concerns on your car, we chose to publish this article to help you confirm the failure of a leaking injector and deal with it properly. To do so, we will first of all check out the circumstance of gasoline injectors and then at those of diesel injectors Citroen Ds5.
Leaking injector on my petrol Citroen Ds5
It is essential to know that the injectors on petrol and diesel engines are different, the truth is, the difference in combustion between these two kind 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 Citroen Ds5: The different leaks
It should be mentioned that injector leaks on a Citroen Ds5 equipped with a petrol engine are pretty rare. This is because of 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 possible that you have a leak from the top of the injector, this is the part 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 suffer a leak coming from the lower portion 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 Citroen Ds5
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 Citroen Ds5: The different leaks
In the circumstance of leaking diesel injectors on your Citroen Ds5, there are three several kind 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 reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Citroen Ds5 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 troublesome, 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 checking you have oil leaking but it does not come from your injectors, we recommend you to read this article on the presence of oil leaking on your Citroen Ds5.
Leaking injector on my Citroen Ds5, how to fix the leak
And at last, we’re going to check out how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen previously, to a worn seal because of the pressures endured. 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 carried out…
- 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 very often be restricted 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 assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all cases, these interventions are not automatically complicated, but if you have the smallest hesitation in the treatment of your injector that leaks on your Citroen Ds5, we recommend you to get closer to your mechanic to avoid any bad manipulation that could severely harm the condition of your Citroen Ds5.
If you have any additional questions about the Citroen Ds5, do not hesitate to consult our Citroen Ds5 category.
