If you are informed of abnormal symptoms on your car, you are right to be preoccupied, because a car represents a big annual budget and surprising breakdowns don’t reduce the expenses. So what if you sense that you have a leaking injector on your Ford Kuga? You probably figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or uncommon black smoke. These three symptoms are the main indicators of a leaking injector. As this failure can cause more serious engine trouble on your car, we made a decision to produce this content to help you verify the failure of a leaking injector and treat it properly. To do so, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Ford Kuga.


Leaking injector on my petrol Ford Kuga

It is important 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 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 Ford Kuga: The different leaks

It should be said that injector leaks on a Ford Kuga equipped with a petrol engine are pretty rare. This is due to 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 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 experience 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 Ford Kuga

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 Ford Kuga: The different leaks

In the case of leaking diesel injectors on your Ford Kuga, there are three different sort of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform as time passes, commonly the leak will be at the clamping point.
  • Injector return leakage:
    As its name suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Ford Kuga 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 encounter 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 read this content on the existence of oil leaking on your Ford Kuga.

Leaking injector on my Ford Kuga, how to fix the leak

And to finish, we’re going to look at how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen prior to this, to a worn seal as a result of 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 achieved…
  • 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 limited to replacing the seals that have failed:

  • Discover the source of the leak
  • Take apart the injector in question
  • Change 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 specifically very hard, but if you have the slightest doubt in the treatment of your injector that leaks on your Ford Kuga, we advise you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Ford Kuga.

If you want more tutorials on the Ford Kuga, go to our Ford Kuga category.