Whenever you are alert of unusual symptoms on your automobile, you are right to be preoccupied, because a car represents a big annual budget and unforeseen breakdowns don’t lower the bill. So what if you sense that you have a leaking injector on your Ford Mondeo? 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 indicators of a leaking injector. As this troubles can cause more serious engine complications on your car, we decided to produce this article content to help you verify the failure of a leaking injector and deal with it properly. To accomplish this, we will first of all take a look at the case of gasoline injectors and then at those of diesel injectors Ford Mondeo.

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Leaking injector on my petrol Ford Mondeo

It is important to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two kind 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 Ford Mondeo: The different leaks

It should be noted that injector leaks on a Ford Mondeo 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 kind 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 attached 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 appear from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Ford Mondeo

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Ford Mondeo: The different leaks

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

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform with time, usually the leak will be at the clamping point.
  • Injector return leakage:
    As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Ford Mondeo 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 feel 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 browse this article content on the existence of oil leaking on your Ford Mondeo.

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

And to finish, we’re going to take a look at how to fix a leaking injector on your car. Frequently 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 enormous, specifically on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is completed…
  • Masking 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 oftentimes be restricted to swapping the seals that have failed:

  • Discover 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 respect with the manufacturer’s standards.

In all cases, these interventions are not automatically complex, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Ford Mondeo, we advise you to get closer to your auto mechanic to avoid any bad manipulation that could seriously harm the condition of your Ford Mondeo.

In the event that you have any additional questions about the Ford Mondeo, do not hesitate to consult our Ford Mondeo category.