Whenever you are alert of unusual signs on your vehicle, you are right to be preoccupied, because a car represents a huge annual budget and surprising breakdowns don’t reduce the bill. So what if you feel like you have a leaking injector on your Peugeot 4007? You most likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three signs of illness are the main symptoms of a leaking injector. As this troubles can lead to more critical engine concerns on your car, we thought we would compose this content page to help you confirm the failure of a leaking injector and deal with it correctly. To do this, we will first of all check out the circumstance of gasoline injectors and then at those of diesel injectors Peugeot 4007.

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Leaking injector on my petrol Peugeot 4007

It is important to know that the injectors on petrol and diesel engines are different, the truth is, the difference in combustion between these two sort of engines makes the injection different. The essential 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 Peugeot 4007: The different leaks

It should be said that injector leaks on a Peugeot 4007 equipped with a petrol engine are rather infrequent. This is as a result of 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 plausible that you have a leak from the top of the injector, this is the portion that is linked 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 part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Peugeot 4007

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure generates 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 Peugeot 4007: The different leaks

In the circumstance of leaking diesel injectors on your Peugeot 4007, there are three several sort of leaks:

  • Leakage from the injector inlet:
    In this instance, it is an inlet pipe that will deform over time, usually 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 Peugeot 4007 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 bothersome, 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 recommend you to read this content page on the existence of oil leaking on your Peugeot 4007.

Leaking injector on my Peugeot 4007, how to fix the leak

And to finish, we’re going to check out how to fix a leaking injector on your car. Oftentimes a leak is associated, as we have seen sooner, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some precautions:

  • 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.

Concerning the repair part of your leak, it will regularly be restricted to swapping the seals that have failed:

  • Identify the source of the leak
  • Take apart the injector in question
  • Change the corresponding seal kit
  • Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.

In all cases, these interventions are not automatically complicated, but if you have the smallest doubt in the treatment of your injector that leaks on your Peugeot 4007, we recommend you to get closer to your auto technician to avoid any bad handling that could seriously harm the condition of your Peugeot 4007.

To discover more tips on the Peugeot 4007, take a look at the Peugeot 4007 category.