In the event that you are aware of abnormal signs on your car, you are right to be concerned, because a car represents a big annual budget and unforeseen breakdowns don’t reduce the costs. So what if you feel as if you have a leaking injector on your Citroen C6? You almost certainly figured it out thanks to black/oily drips along your engine, or a disturbed idle, or unusual black smoke. These three signs of illness are the main signs of a leaking injector. As this troubles can lead to more serious engine concerns on your car, we chose to write this article to help you validate the failure of a leaking injector and handle it properly. To achieve this, we will first check out the circumstance of gasoline injectors and then at those of diesel injectors Citroen C6.
Leaking injector on my petrol Citroen C6
It is vital to know that the injectors on petrol and diesel engines are different, the truth is, the difference in combustion between these two types of engines makes the injection different. The biggest 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 C6: The different leaks
It should be noted that injector leaks on a Citroen C6 equipped with a petrol engine are rather infrequent. This is due to the much lower pressure in the petrol intake systems. Nevertheless, there are two types 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 attached 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 previously.
Leaking injector on my diesel Citroen C6
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 C6: The different leaks
In the circumstance of leaking diesel injectors on your Citroen C6, there are three different types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform in the long run, commonly the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Citroen C6 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 experience an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we encourage you to read this article on the presence of oil leaking on your Citroen C6.
Leaking injector on my Citroen C6, 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 associated, as we have seen sooner, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some safety 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 regularly be limited to changing the seals that have failed:
- Identify 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 respect with the manufacturer’s standards.
In all situations, these interventions are not automatically complex, but if you have the tiniest doubt in the treatment of your injector that leaks on your Citroen C6, we encourage you to get closer to your auto technician to avoid any bad manipulation that could severely harm the condition of your Citroen C6.
To discover more tips on the Citroen C6, take a look at the Citroen C6 category.
