In the event you are informed of abnormal signs on your vehicle, you are right to be concerned, because a car represents a massive annual budget and unpredicted breakdowns don’t reduce the expenses. So what if you feel like you have a leaking injector on your Mitsubishi Pajero? You most likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or unusual black smoke. These three signs of illness are the main signals of a leaking injector. As this problem can end up in more significant engine concerns on your car, we decided to compose this article to help you confirm the failure of a leaking injector and treat it properly. To achieve this, we will first take a look at the circumstance of gasoline injectors and then at those of diesel injectors Mitsubishi Pajero.

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Leaking injector on my petrol Mitsubishi Pajero

It is vital 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 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 Mitsubishi Pajero: The different leaks

It should be known that injector leaks on a Mitsubishi Pajero equipped with a petrol engine are pretty infrequent. This is caused by 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 conceivable that you have a leak from the top of the injector, this is the part 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 encounter a leak coming from the lower portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Mitsubishi Pajero

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 Mitsubishi Pajero: The different leaks

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

  • Leakage from the injector inlet:
    In this instance, it is an inlet pipe that will deform in the long run, usually 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 Mitsubishi Pajero will be caused by 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 checking you have oil leaking but it does not come from your injectors, we advise you to consult this article on the presence of oil leaking on your Mitsubishi Pajero.

Leaking injector on my Mitsubishi Pajero, 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. Frequently a leak is associated, as we have seen sooner, to a worn seal due to the pressures endured. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is carried out…
  • Covering you to avoid the risk of fuel spillage
  • NEVER work on a running diesel engine injector.

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

  • Identify the source of the leak
  • Dismantle 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 inevitably complicated, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Mitsubishi Pajero, we advise you to get closer to your auto technician to avoid any bad handling that could seriously harm the condition of your Mitsubishi Pajero.

To find more tips on the Mitsubishi Pajero, take a look at the Mitsubishi Pajero category.