Whenever you are alert of irregular symptoms on your car, you are right to be intrigued, because a car represents a huge annual budget and unexpected malfunctions don’t reduce the bill. So what if you sense that you have a leaking injector on your Ford Puma? You likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three symptoms are the main symptoms of a leaking injector. As this troubles can end up in more severe engine complications on your car, we made a decision to write this article to help you ensure the failure of a leaking injector and handle it properly. To achieve this, we will first look into the case of gasoline injectors and then at those of diesel injectors Ford Puma.


Leaking injector on my petrol Ford Puma

It is important to know that the injectors on petrol and diesel engines are distinct, in fact, the difference in combustion between these two types 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 Puma: The different leaks

It should be known that injector leaks on a Ford Puma equipped with a petrol engine are pretty rare. This is caused by the much lower pressure in the petrol intake systems. Nevertheless, there are two types of leaks:

  • Leakage from the top of the injector:
    It is conceivable that you have a leak from the top of the injector, this is the part 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 portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen before.

Leaking injector on my diesel Ford Puma

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 Puma: The different leaks

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

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform along with time, usually the leak will be at the clamping point.
  • Injector return leakage:
    As its name implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Ford Puma 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 examining you have oil leaking but it does not come from your injectors, we encourage you to browse this article on the presence of oil leaking on your Ford Puma.

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

And at last, we’re going to look into how to fix a leaking injector on your car. Very often a leak is connected, as we have seen previously, 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 safety measures:

  • 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 regularly be restricted 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 cases, these interventions are not necessarily difficult, but if you have the smallest hesitation in the treatment of your injector that leaks on your Ford Puma, we encourage you to get closer to your auto mechanic to avoid any bad manipulation that could seriously harm the condition of your Ford Puma.

To get more tips on the Ford Puma, take a look at the Ford Puma category.