If you are alert of irregular symptoms on your vehicle, you are right to be preoccupied, because a car represents a huge annual budget and surprising malfunctions don’t reduce the costs. So what if you think that you have a leaking injector on your Peugeot 806? You probably figured it out thanks to black/oily drips along your engine, or a troubled idle, or unconventional black smoke. These three signs of illness are the main signals of a leaking injector. As this troubles can lead to more significant engine concerns on your car, we thought we would compose this content to help you ensure the failure of a leaking injector and treat it properly. To do this, we will first take a look at the circumstance of gasoline injectors and then at those of diesel injectors Peugeot 806.

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Leaking injector on my petrol Peugeot 806

It is important to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two types of engines makes the injection different. The biggest 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 806: The different leaks

It should be known that injector leaks on a Peugeot 806 equipped with a petrol engine are rather infrequent. This is caused by 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 component that is connected to the fuel rail, an O-ring will be involved in this.
  • Leak injector of the lower part:
    At last, you may experience a leak coming from the lower portion of the injector of your car, this one will come from the junction with the engine and not with the rail as seen previously.

Leaking injector on my diesel Peugeot 806

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 Peugeot 806: The different leaks

In the circumstance of leaking diesel injectors on your Peugeot 806, there are three several types of leaks:

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform after a while, generally the leak will be at the clamping point.
  • Injector return leakage:
    As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Peugeot 806 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 verifying you have oil leaking but it does not come from your injectors, we encourage you to consult this content on the existence of oil leaking on your Peugeot 806.

Leaking injector on my Peugeot 806, 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. Regularly a leak is linked, as we have seen previously, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some 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 very often be restricted to changing the seals that have failed:

  • Locate 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 accordance with the manufacturer’s standards.

In all situations, these interventions are not inevitably complex, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Peugeot 806, we encourage you to get closer to your auto mechanic to avoid any bad manipulation that could significantly harm the condition of your Peugeot 806.

If you want more tutorials on the Peugeot 806, go to our Peugeot 806 category.