In the event that you are alert of unusual signs on your car, you are right to be concerned, because a car represents a huge annual budget and unexpected breakdowns don’t reduce the bill. So what if you feel like you have a leaking injector on your Fiat 500 L? You probably figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or strange black smoke. These three symptoms are the main signals of a leaking injector. As this problem can produce more serious engine trouble on your car, we decided to produce this article content to help you verify the failure of a leaking injector and deal with it correctly. To achieve this, we will first of all check out the circumstance of gasoline injectors and then at those of diesel injectors Fiat 500 L.
Leaking injector on my petrol Fiat 500 L
It is fundamental to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two types of engines makes the injection different. The main 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 500 L: The different leaks
It should be known that injector leaks on a Fiat 500 L equipped with a petrol engine are pretty infrequent. This is caused by the much lower pressure in the petrol intake systems. Even so, 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 component 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 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 previously.
Leaking injector on my diesel Fiat 500 L
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 500 L: The different leaks
In the circumstance of leaking diesel injectors on your Fiat 500 L, there are three several types of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform over time, 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 500 L will be a consequence of 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 feel an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we suggest you to consult this article content on the presence of oil leaking on your Fiat 500 L.
Leaking injector on my Fiat 500 L, 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 previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some safety measures:
- 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.
Regarding the repair part of your leak, it will very often be limited to changing 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 respect with the manufacturer’s standards.
In all situations, these interventions are not necessarily complex, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Fiat 500 L, we suggest you to get closer to your mechanic to avoid any bad handling that could critically harm the condition of your Fiat 500 L.
To find more tips on the Fiat 500 L, take a look at the Fiat 500 L category.
