Whenever you are informed of abnormal signs on your car, you are right to be preoccupied, because a car represents a huge annual budget and unexpected breakdowns don’t lower the expenses. So what if you think that you have a leaking injector on your Fiat Bravo 2? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or strange black smoke. These three signs of illness are the main signs of a leaking injector. As this problem can bring about more serious engine problems on your car, we thought we would write this content page to help you verify the failure of a leaking injector and treat it properly. To do this, we will first check out the case of gasoline injectors and then at those of diesel injectors Fiat Bravo 2.
Leaking injector on my petrol Fiat Bravo 2
It is vital to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two sort of engines makes the injection different. The key difference lies in the pressure undergone 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 2: The different leaks
It should be said that injector leaks on a Fiat Bravo 2 equipped with a petrol engine are pretty infrequent. This is as a result of the much lower pressure in the petrol intake systems. Nevertheless, there are two sort 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 portion that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may suffer a leak coming from the lower part 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 2
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system produces 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 2: The different leaks
In the case of leaking diesel injectors on your Fiat Bravo 2, there are three different sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform as time passes, generally the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Fiat Bravo 2 will be caused 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 find 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 read this content page on the existence of oil leaking on your Fiat Bravo 2.
Leaking injector on my Fiat Bravo 2, how to fix the leak
And to finish, we’re going to check out how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is achieved…
- Masking 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 regularly be limited to swapping the seals that have failed:
- Locate 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 inevitably complex, but if you have the smallest doubt in the treatment of your injector that leaks on your Fiat Bravo 2, we encourage you to get closer to your motor mechanic to avoid any bad manipulation that could severely harm the condition of your Fiat Bravo 2.
If you need more tutorials on the Fiat Bravo 2, go to our Fiat Bravo 2 category.
