In the event you are informed of abnormal signs on your automobile, you are right to be concerned, because a car represents a big annual budget and surprising malfunctions don’t reduce the costs. So what if you sense that you have a leaking injector on your Fiat Punto Evo? You most likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or abnormal black smoke. These three manifestations are the main indicators of a leaking injector. As this failure can end up in more significant engine complications on your car, we made a decision to publish this content page to help you confirm the failure of a leaking injector and deal with it correctly. To achieve this, we will initially look at the circumstance of gasoline injectors and then at those of diesel injectors Fiat Punto Evo.
Leaking injector on my petrol Fiat Punto Evo
It is fundamental 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 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 Punto Evo: The different leaks
It should be said that injector leaks on a Fiat Punto Evo equipped with a petrol engine are pretty rare. This is due to the much lower pressure in the petrol intake systems. Nevertheless, there are two types of leaks:
- Leakage from the top of the injector:
It is plausible that you have a leak from the top of the injector, this is the component 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 experience 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 Punto Evo
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 Punto Evo: The different leaks
In the circumstance of leaking diesel injectors on your Fiat Punto Evo, there are three different 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 Punto Evo 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 experience an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we recommend you to consult this content page on the presence of oil leaking on your Fiat Punto Evo.
Leaking injector on my Fiat Punto Evo, how to fix the leak
And at last, we’re going to look at how to fix a leaking injector on your car. Oftentimes a leak is associated, 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 monumental, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is conducted…
- 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 regularly be restricted to swapping the seals that have failed:
- Identify the source of the leak
- Take apart 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 slightest doubt in the treatment of your injector that leaks on your Fiat Punto Evo, we recommend you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Fiat Punto Evo.
Whenever you have any further questions about the Fiat Punto Evo, do not hesitate to consult our Fiat Punto Evo category.
