In the event that you are informed of unusual symptoms on your vehicle, you are right to be worried, because a car represents a huge annual budget and unpredicted malfunctions don’t lower the bill. So what if you find that you have a leaking injector on your Jeep Liberty? You likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or uncommon black smoke. These three symptoms are the main signals of a leaking injector. As this troubles can lead to more critical engine concerns on your car, we made a decision to write this content page to help you verify the failure of a leaking injector and deal with it properly. To do this, we will first of all look into the case of gasoline injectors and then at those of diesel injectors Jeep Liberty.


Leaking injector on my petrol Jeep Liberty

It is crucial to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two sort of engines makes the injection distinct. 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 Jeep Liberty: The different leaks

It should be noted that injector leaks on a Jeep Liberty equipped with a petrol engine are pretty rare. This is resulting from 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 linked 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 portion of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen before.

Leaking injector on my diesel Jeep Liberty

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 Jeep Liberty: The different leaks

In the case of leaking diesel injectors on your Jeep Liberty, there are three several sort of leaks:

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform in the long run, commonly the leak will be at the clamping point.
  • Injector return leakage:
    As its name reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Jeep Liberty will be brought on by 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 experience an air noise and a compression loss.
  • If after checking you have oil leaking but it does not come from your injectors, we encourage you to read this content page on the presence of oil leaking on your Jeep Liberty.

Leaking injector on my Jeep Liberty, how to fix the leak

And finally, we’re going to look into how to fix a leaking injector on your car. Oftentimes a leak is linked, as we have seen prior to this, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is achieved…
  • 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 limited to changing the seals that have failed:

  • Locate the source of the leak
  • Dismantle the injector in question
  • Change the corresponding seal kit
  • Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.

In all cases, these interventions are not specifically difficult, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Jeep Liberty, we encourage you to get closer to your motor mechanic to avoid any bad handling that could seriously harm the condition of your Jeep Liberty.

If you wish more guides on the Jeep Liberty, go to our Jeep Liberty category.