In cases where you are informed of unusual signs on your automobile, you are right to be worried, because a car represents a huge annual budget and sudden malfunctions don’t lower the bill. So what if you feel as if you have a leaking injector on your Citroen Ds4? You most likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three symptoms are the main symptoms of a leaking injector. As this troubles can end up in more severe engine trouble on your car, we made a decision to prepare this content page to help you verify the failure of a leaking injector and handle it properly. To do so, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Citroen Ds4.
Leaking injector on my petrol Citroen Ds4
It is essential to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two sort of engines makes the injection distinct. The main 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 Citroen Ds4: The different leaks
It should be mentioned that injector leaks on a Citroen Ds4 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 sort 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 component that is connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, 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 previously.
Leaking injector on my diesel Citroen Ds4
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 Citroen Ds4: The different leaks
In the circumstance of leaking diesel injectors on your Citroen Ds4, there are three different sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform with time, usually 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 Ds4 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 troublesome, 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 checking you have oil leaking but it does not come from your injectors, we suggest you to read this content page on the existence of oil leaking on your Citroen Ds4.
Leaking injector on my Citroen Ds4, how to fix the leak
And to finish, we’re going to look at how to fix a leaking injector on your car. Oftentimes a leak is linked, 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 done…
- Masking you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Regarding the repair part of your leak, it will regularly be restricted to changing the seals that have failed:
- Find out the source of the leak
- Take apart 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 automatically very hard, but if you have the smallest hesitation in the treatment of your injector that leaks on your Citroen Ds4, we suggest you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Citroen Ds4.
To find more tips on the Citroen Ds4, take a look at the Citroen Ds4 category.
