If you are informed of abnormal signs on your car, you are right to be preoccupied, because a car represents a huge annual budget and unpredicted malfunctions don’t lower the bill. So what if you feel like you have a leaking injector on your Citroen C3 Picasso? You most likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or abnormal black smoke. These three signs of illness are the main indicators of a leaking injector. As this problem can bring about more serious engine problems on your car, we thought we would write this content page to help you validate the failure of a leaking injector and handle it properly. To accomplish this, we will first of all check out the case of gasoline injectors and then at those of diesel injectors Citroen C3 Picasso.

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Leaking injector on my petrol Citroen C3 Picasso

It is vital to know that the injectors on petrol and diesel engines are distinct, the truth is, 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 C3 Picasso: The different leaks

It should be said that injector leaks on a Citroen C3 Picasso equipped with a petrol engine are rather infrequent. 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 plausible 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 experience 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 C3 Picasso

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 C3 Picasso: The different leaks

In the case of leaking diesel injectors on your Citroen C3 Picasso, 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, generally the leak will be at the clamping point.
  • Injector return leakage:
    As its name suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Citroen C3 Picasso will be the result of an O-ring or its plastic tip that leaks.
  • Injector base leak:
    This injection leak is one of the most annoying, 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 consult this content page on the presence of oil leaking on your Citroen C3 Picasso.

Leaking injector on my Citroen C3 Picasso, 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 connected, as we have seen previously, to a worn seal due to the pressures endured. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is done…
  • Covering 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 oftentimes be restricted to swapping the seals that have failed:

  • Situate 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 cases, these interventions are not necessarily difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Citroen C3 Picasso, we advise you to get closer to your repair shop to avoid any bad handling that could severely harm the condition of your Citroen C3 Picasso.

If perhaps you have any further questions about the Citroen C3 Picasso, do not hesitate to consult our Citroen C3 Picasso category.