If you are alert of unusual signs on your car, you are right to be worried, because a car represents a massive annual budget and unforeseen malfunctions don’t lower the costs. So what if you feel as if you have a leaking injector on your Land Rover LR4? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three symptoms are the main signs of a leaking injector. As this troubles can end up in more serious engine concerns on your car, we thought we would prepare this content page to help you validate the failure of a leaking injector and treat it properly. To do this, we will first look into the case of gasoline injectors and then at those of diesel injectors Land Rover LR4.

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Leaking injector on my petrol Land Rover LR4

It is essential to know that the injectors on petrol and diesel engines are distinct, in fact, the difference in combustion between these two sort of engines makes the injection distinct. The main 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 Land Rover LR4: The different leaks

It should be said that injector leaks on a Land Rover LR4 equipped with a petrol engine are pretty infrequent. This is caused by 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:
    At last, you may experience 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 previously.

Leaking injector on my diesel Land Rover LR4

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 Land Rover LR4: The different leaks

In the case of leaking diesel injectors on your Land Rover LR4, there are three different sort of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform with time, in most cases the leak will be at the clamping point.
  • Injector return leakage:
    As its name indicates, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Land Rover LR4 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 checking you have oil leaking but it does not come from your injectors, we advise you to consult this content page on the existence of oil leaking on your Land Rover LR4.

Leaking injector on my Land Rover LR4, how to fix the leak

And at last, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen sooner, to a worn seal because of the pressures endured. 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…
  • 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 replacing the seals that have failed:

  • Situate 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 respect with the manufacturer’s standards.

In all cases, these interventions are not inevitably very hard, but if you have the slightest hesitation in the treatment of your injector that leaks on your Land Rover LR4, we advise you to get closer to your repair shop to avoid any bad handling that could severely harm the condition of your Land Rover LR4.

In the event that you have any further questions about the Land Rover LR4, do not hesitate to consult our Land Rover LR4 category.