In the event that you are alert of abnormal signs on your vehicle, you are right to be intrigued, because a car represents a big annual budget and unexpected breakdowns don’t lower the costs. So what if you feel like you have a leaking injector on your Peugeot Boxer? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three signs of illness are the main signs of a leaking injector. As this failure can cause more serious engine complications on your car, we made a decision to compose this content page to help you validate the failure of a leaking injector and deal with it properly. To achieve this, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Peugeot Boxer.


Leaking injector on my petrol Peugeot Boxer

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

It should be known that injector leaks on a Peugeot Boxer 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 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 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 encounter a leak coming from the lower part 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 Peugeot Boxer

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Boxer: The different leaks

In the case of leaking diesel injectors on your Peugeot Boxer, there are three different types of leaks:

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform after a while, commonly the leak will be at the clamping point.
  • Injector return leakage:
    As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Peugeot Boxer 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 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 verifying you have oil leaking but it does not come from your injectors, we advise you to browse this content page on the existence of oil leaking on your Peugeot Boxer.

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

And at last, we’re going to take a look at how to fix a leaking injector on your car. Oftentimes a leak is linked, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some safety measures:

  • Lower the pressure before any work is conducted…
  • 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 frequently be restricted to changing the seals that have failed:

  • Find out the source of the leak
  • Dismantle the injector in question
  • Replace the corresponding seal kit
  • Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.

In all cases, these interventions are not necessarily complex, but if you have the slightest hesitation in the treatment of your injector that leaks on your Peugeot Boxer, we advise you to get closer to your auto mechanic to avoid any bad handling that could significantly harm the condition of your Peugeot Boxer.

If you want more guides on the Peugeot Boxer, go to our Peugeot Boxer category.