In the event that you are alert of abnormal signs on your vehicle, you are right to be intrigued, because a car represents a huge annual budget and unpredicted breakdowns don’t lower the costs. So what if you sense that you have a leaking injector on your Audi Tt? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or strange black smoke. These three symptoms are the main symptoms of a leaking injector. As this troubles can produce more severe engine complications on your car, we made a decision to produce this content page to help you confirm the failure of a leaking injector and handle it properly. To do so, we will first check out the case of gasoline injectors and then at those of diesel injectors Audi Tt.
Leaking injector on my petrol Audi Tt
It is essential to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two types 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 Tt: The different leaks
It should be known that injector leaks on a Audi Tt equipped with a petrol engine are rather infrequent. This is because of 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 conceivable that you have a leak from the top of the injector, this is the part that is connected 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 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 Tt
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 Tt: The different leaks
In the case of leaking diesel injectors on your Audi Tt, there are three several types of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform along with 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 Tt 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 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 read this content page on the existence of oil leaking on your Audi Tt.
Leaking injector on my Audi Tt, how to fix the leak
And to finish, we’re going to check out how to fix a leaking injector on your car. Frequently a leak is connected, as we have seen prior to this, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is carried out…
- Masking 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 regularly be restricted to swapping the seals that have failed:
- Locate the source of the leak
- Dismantle 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 very hard, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Audi Tt, we recommend you to get closer to your motor mechanic to avoid any bad handling that could severely harm the condition of your Audi Tt.
To find more tips on the Audi Tt, take a look at the Audi Tt category.
