In the event that you are alert of unusual symptoms on your automobile, you are right to be intrigued, because a car represents a massive annual budget and unforeseen breakdowns don’t lower the expenses. So what if you feel as if you have a leaking injector on your Alfa Romeo Giulia? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unconventional black smoke. These three symptoms are the main indicators of a leaking injector. As this problem can lead to more significant engine concerns on your car, we decided to produce this content to help you confirm the failure of a leaking injector and handle it correctly. To achieve this, we will first of all check out the circumstance of gasoline injectors and then at those of diesel injectors Alfa Romeo Giulia.
Leaking injector on my petrol Alfa Romeo Giulia
It is vital to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two sort of engines makes the injection distinct. The biggest 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 Alfa Romeo Giulia: The different leaks
It should be mentioned that injector leaks on a Alfa Romeo Giulia equipped with a petrol engine are pretty infrequent. This is due to 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 part that is attached 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 before.
Leaking injector on my diesel Alfa Romeo Giulia
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure generates 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 Alfa Romeo Giulia: The different leaks
In the circumstance of leaking diesel injectors on your Alfa Romeo Giulia, there are three several sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform as time passes, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Alfa Romeo Giulia 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 bothersome, 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 checking you have oil leaking but it does not come from your injectors, we suggest you to browse this content on the presence of oil leaking on your Alfa Romeo Giulia.
Leaking injector on my Alfa Romeo Giulia, how to fix the leak
And finally, we’re going to check out how to fix a leaking injector on your car. Oftentimes a leak is connected, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is conducted…
- Covering 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 restricted to replacing the seals that have failed:
- Situate 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 situations, these interventions are not inevitably difficult, but if you have the slightest doubt in the treatment of your injector that leaks on your Alfa Romeo Giulia, we suggest you to get closer to your mechanic to avoid any bad handling that could significantly harm the condition of your Alfa Romeo Giulia.
If you need more guides on the Alfa Romeo Giulia, go to our Alfa Romeo Giulia category.
