In cases where you are informed of irregular symptoms on your automobile, you are right to be preoccupied, because a car represents a huge annual budget and unpredicted malfunctions don’t reduce the expenses. So what if you find that you have a leaking injector on your Audi Q2? You most likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or uncommon black smoke. These three symptoms are the main signals of a leaking injector. As this failure can end up in more serious engine concerns on your car, we made a decision to write this article content to help you confirm the failure of a leaking injector and deal with it properly. To do this, we will initially look into the case of gasoline injectors and then at those of diesel injectors Audi Q2.
Leaking injector on my petrol Audi Q2
It is essential to know that the injectors on petrol and diesel engines are distinct, in reality, the difference in combustion between these two types of engines makes the injection distinct. 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 Audi Q2: The different leaks
It should be mentioned that injector leaks on a Audi Q2 equipped with a petrol engine are rather infrequent. 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:
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 previously.
Leaking injector on my diesel Audi Q2
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Audi Q2: The different leaks
In the case of leaking diesel injectors on your Audi Q2, 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, commonly the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Audi Q2 will be brought on by 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 encounter an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we recommend you to read this article content on the existence of oil leaking on your Audi Q2.
Leaking injector on my Audi Q2, how to fix the leak
And to finish, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen sooner, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is enormous, specifically 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 very often 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 set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not specifically complicated, but if you have the smallest hesitation in the treatment of your injector that leaks on your Audi Q2, we recommend you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Audi Q2.
In the event that you have any additional questions about the Audi Q2, do not hesitate to consult our Audi Q2 category.
