If you are aware of irregular symptoms on your car, you are right to be worried, because a car represents a huge annual budget and sudden malfunctions don’t reduce the bill. So what if you feel as if you have a leaking injector on your Fiat Bravo? You likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three signs of illness are the main symptoms of a leaking injector. As this troubles can produce more severe engine problems on your car, we decided to write this article to help you verify the failure of a leaking injector and treat 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 Fiat Bravo.

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Leaking injector on my petrol Fiat Bravo

It is important to know that the injectors on petrol and diesel engines are distinct, actually, 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 Fiat Bravo: The different leaks

It should be said that injector leaks on a Fiat Bravo equipped with a petrol engine are pretty rare. This is because 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 possible that you have a leak from the top of the injector, this is the portion that is attached to the fuel rail, an O-ring will be involved in this.
  • Leak injector of the lower part:
    At last, you may suffer a leak coming from the lower portion 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 Fiat Bravo

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 Fiat Bravo: The different leaks

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

  • Leakage from the injector inlet:
    In this instance, it is an inlet pipe that will deform in the long run, generally the leak will be at the clamping point.
  • Injector return leakage:
    As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Fiat Bravo will be caused 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 encourage you to consult this article on the existence of oil leaking on your Fiat Bravo.

Leaking injector on my Fiat Bravo, how to fix the leak

And finally, we’re going to take a look at how to fix a leaking injector on your car. Very often a leak is associated, as we have seen prior to this, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is carried out…
  • 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:

  • Identify the source of the leak
  • Dismantle 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 automatically very hard, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Fiat Bravo, we encourage you to get closer to your motor mechanic to avoid any bad manipulation that could seriously harm the condition of your Fiat Bravo.

To discover more tips on the Fiat Bravo, take a look at the Fiat Bravo category.