Whenever you are aware of irregular symptoms on your automobile, you are right to be preoccupied, because a car represents a big annual budget and surprising breakdowns don’t reduce the costs. So what if you feel as if you have a leaking injector on your Mazda 2? You almost certainly figured it out thanks to black/oily drips along your engine, or a troubled idle, or unconventional black smoke. These three signs of illness are the main signals of a leaking injector. As this failure can cause more severe engine problems on your car, we thought we would write this content to help you verify the failure of a leaking injector and deal with it correctly. To accomplish this, we will initially take a look at the circumstance of gasoline injectors and then at those of diesel injectors Mazda 2.

leaking-injector-mazda-2

Leaking injector on my petrol Mazda 2

It is crucial to know that the injectors on petrol and diesel engines are different, in fact, the difference in combustion between these two kind 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 Mazda 2: The different leaks

It should be noted that injector leaks on a Mazda 2 equipped with a petrol engine are rather rare. This is resulting from the much lower pressure in the petrol intake systems. However, there are two kind 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 part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen before.

Leaking injector on my diesel Mazda 2

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Mazda 2: The different leaks

In the circumstance of leaking diesel injectors on your Mazda 2, there are three different kind 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 indicates, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Mazda 2 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 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 encourage you to consult this content on the existence of oil leaking on your Mazda 2.

Leaking injector on my Mazda 2, 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 connected, as we have seen prior to this, to a worn seal because of the pressures endured. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some measures:

  • Lower the pressure before any work is carried out…
  • Covering 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 very often be restricted to replacing the seals that have failed:

  • Find the source of the leak
  • Take apart the injector in question
  • Change the corresponding seal kit
  • Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.

In all situations, these interventions are not necessarily complicated, but if you have the slightest hesitation in the treatment of your injector that leaks on your Mazda 2, we encourage you to get closer to your motor mechanic to avoid any bad manipulation that could seriously harm the condition of your Mazda 2.

To find more tips on the Mazda 2, take a look at the Mazda 2 category.