In the event that you are aware of abnormal symptoms on your car, you are right to be preoccupied, because a car represents a massive annual budget and surprising malfunctions don’t reduce the bill. So what if you feel like you have a leaking injector on your Audi E-Tron? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or strange black smoke. These three manifestations are the main indicators of a leaking injector. As this problem can produce more serious engine concerns on your car, we thought we would prepare this content to help you ensure the failure of a leaking injector and handle it properly. To do so, we will first of all check out the circumstance of gasoline injectors and then at those of diesel injectors Audi E-Tron.
Leaking injector on my petrol Audi E-Tron
It is crucial to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two sort of engines makes the injection different. 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 Audi E-Tron: The different leaks
It should be said that injector leaks on a Audi E-Tron equipped with a petrol engine are rather infrequent. This is as a result of 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 plausible that you have a leak from the top of the injector, this is the component that is connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may suffer a leak coming from the lower portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Audi E-Tron
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 Audi E-Tron: The different leaks
In the circumstance of leaking diesel injectors on your Audi E-Tron, there are three different sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform as time passes, generally the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Audi E-Tron will be caused by 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 find an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we advise you to read this content on the presence of oil leaking on your Audi E-Tron.
Leaking injector on my Audi E-Tron, how to fix the leak
And to finish, we’re going to check out how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen sooner, 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 measures:
- 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 oftentimes be limited to replacing the seals that have failed:
- Find out 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 automatically very hard, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Audi E-Tron, we advise you to get closer to your motor mechanic to avoid any bad manipulation that could seriously harm the condition of your Audi E-Tron.
To find more tips on the Audi E-Tron, take a look at the Audi E-Tron category.
