In cases where you are informed of unusual symptoms on your car, you are right to be concerned, because a car represents a massive annual budget and unforeseen malfunctions don’t lower the costs. So what if you feel like you have a leaking injector on your Fiat 500 X? You probably figured it out thanks to black/oily drips along your engine, or a disturbed idle, or unusual black smoke. These three symptoms are the main signals of a leaking injector. As this troubles can lead to more critical engine problems on your car, we decided to prepare this article to help you verify the failure of a leaking injector and deal with it properly. To accomplish this, we will initially look into the case of gasoline injectors and then at those of diesel injectors Fiat 500 X.
Leaking injector on my petrol Fiat 500 X
It is important to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two sort of engines makes the injection different. The essential 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 X: The different leaks
It should be known that injector leaks on a Fiat 500 X equipped with a petrol engine are rather infrequent. This is resulting from the much lower pressure in the petrol intake systems. Even so, there are two sort 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 part that is connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, 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 sooner.
Leaking injector on my diesel Fiat 500 X
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 500 X: The different leaks
In the case of leaking diesel injectors on your Fiat 500 X, there are three different sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform in the long run, commonly 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 X will be the result 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 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 consult this article on the presence of oil leaking on your Fiat 500 X.
Leaking injector on my Fiat 500 X, how to fix the leak
And finally, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen prior to this, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some precautions:
- 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.
Concerning the repair part of your leak, it will frequently 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 accordance with the manufacturer’s standards.
In all cases, these interventions are not specifically difficult, but if you have the tiniest doubt in the treatment of your injector that leaks on your Fiat 500 X, we encourage you to get closer to your auto technician to avoid any bad manipulation that could critically harm the condition of your Fiat 500 X.
To get more tips on the Fiat 500 X, take a look at the Fiat 500 X category.
