In the event you are informed of unusual symptoms on your vehicle, you are right to be preoccupied, because a car represents a huge annual budget and unexpected malfunctions don’t reduce the expenses. So what if you sense that you have a leaking injector on your Audi R8? You most likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or unconventional black smoke. These three symptoms are the main symptoms of a leaking injector. As this problem can bring on more critical engine concerns on your car, we thought we would prepare this content page to help you verify the failure of a leaking injector and treat it properly. To accomplish this, we will first look at the circumstance of gasoline injectors and then at those of diesel injectors Audi R8.
Leaking injector on my petrol Audi R8
It is vital to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two kind 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 Audi R8: The different leaks
It should be said that injector leaks on a Audi R8 equipped with a petrol engine are pretty infrequent. This is because of the much lower pressure in the petrol intake systems. Even so, there are two kind 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 part 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 encounter a leak coming from the lower portion 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 Audi R8
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 R8: The different leaks
In the circumstance of leaking diesel injectors on your Audi R8, there are three several kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform in the long run, usually the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Audi R8 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 feel an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we suggest you to read this content page on the existence of oil leaking on your Audi R8.
Leaking injector on my Audi R8, how to fix the leak
And to finish, we’re going to look at how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen prior to this, to a worn seal as a result of the pressures endured. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is completed…
- 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 very often be restricted to changing the seals that have failed:
- Find the source of the leak
- Dismantle 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 situations, these interventions are not inevitably difficult, but if you have the smallest hesitation in the treatment of your injector that leaks on your Audi R8, we suggest you to get closer to your auto technician to avoid any bad manipulation that could significantly harm the condition of your Audi R8.
If you wish more tutorials on the Audi R8, go to our Audi R8 category.
