Whenever you are informed of unusual signs on your vehicle, you are right to be concerned, because a car represents a big annual budget and unpredicted malfunctions don’t reduce the bill. So what if you feel as if you have a leaking injector on your Ford C Max? You most likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or uncommon black smoke. These three symptoms are the main signals of a leaking injector. As this problem can bring on more critical engine problems on your car, we made a decision to prepare this content to help you validate the failure of a leaking injector and treat it properly. To accomplish this, we will first check out the case of gasoline injectors and then at those of diesel injectors Ford C Max.

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Leaking injector on my petrol Ford C Max

It is crucial to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two types of engines makes the injection different. 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 Ford C Max: The different leaks

It should be said that injector leaks on a Ford C Max equipped with a petrol engine are rather infrequent. This is as a result of the much lower pressure in the petrol intake systems. However, there are two types 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 connected 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 come from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Ford C Max

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 Ford C Max: The different leaks

In the case of leaking diesel injectors on your Ford C Max, there are three different types of leaks:

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform over 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 Ford C Max 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 suggest you to read this content on the presence of oil leaking on your Ford C Max.

Leaking injector on my Ford C Max, how to fix the leak

And to finish, we’re going to check out how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen sooner, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is done…
  • 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 oftentimes be limited to swapping the seals that have failed:

  • Identify 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 necessarily complex, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Ford C Max, we suggest you to get closer to your auto mechanic to avoid any bad handling that could severely harm the condition of your Ford C Max.

If you wish more guides on the Ford C Max, go to our Ford C Max category.