If you are alert of unusual signs on your automobile, you are right to be preoccupied, because a car represents a huge annual budget and unpredicted breakdowns don’t lower the costs. So what if you find that you have a leaking injector on your Citroen C4 Cactus? You almost certainly figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or strange black smoke. These three manifestations are the main symptoms of a leaking injector. As this failure can end up in more severe engine problems on your car, we made a decision to prepare this article content to help you confirm the failure of a leaking injector and treat it correctly. To accomplish this, we will initially look into the circumstance of gasoline injectors and then at those of diesel injectors Citroen C4 Cactus.
Leaking injector on my petrol Citroen C4 Cactus
It is crucial to know that the injectors on petrol and diesel engines are distinct, in fact, the difference in combustion between these two sort of engines makes the injection distinct. The key 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 C4 Cactus: The different leaks
It should be mentioned that injector leaks on a Citroen C4 Cactus equipped with a petrol engine are pretty rare. This is caused by the much lower pressure in the petrol intake systems. Even so, 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 part that is attached 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 before.
Leaking injector on my diesel Citroen C4 Cactus
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 C4 Cactus: The different leaks
In the circumstance of leaking diesel injectors on your Citroen C4 Cactus, there are three different sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform along with time, commonly the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Citroen C4 Cactus 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 bothersome, 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 examining 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 Citroen C4 Cactus.
Leaking injector on my Citroen C4 Cactus, how to fix the leak
And to finish, we’re going to look into how to fix a leaking injector on your car. Oftentimes a leak is associated, as we have seen prior to this, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is completed…
- Covering 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 changing the seals that have failed:
- Discover the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all situations, these interventions are not inevitably very hard, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Citroen C4 Cactus, we advise you to get closer to your mechanic to avoid any bad manipulation that could seriously harm the condition of your Citroen C4 Cactus.
Whenever you have any additional questions about the Citroen C4 Cactus, do not hesitate to consult our Citroen C4 Cactus category.
