In the event you are informed of abnormal symptoms on your automobile, you are right to be intrigued, because a car represents a huge annual budget and surprising breakdowns don’t reduce the costs. So what if you feel like you have a leaking injector on your Volkswagen T-Cross? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or abnormal black smoke. These three symptoms are the main signals of a leaking injector. As this failure can bring about more serious engine complications on your car, we made a decision to write this article to help you confirm the failure of a leaking injector and handle it properly. To achieve this, we will first of all check out the case of gasoline injectors and then at those of diesel injectors Volkswagen T-Cross.
Leaking injector on my petrol Volkswagen T-Cross
It is important to know that the injectors on petrol and diesel engines are distinct, in reality, 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 Volkswagen T-Cross: The different leaks
It should be known that injector leaks on a Volkswagen T-Cross equipped with a petrol engine are pretty infrequent. This is caused by the much lower pressure in the petrol intake systems. Even so, 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 portion 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 suffer a leak coming from the lower part 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 Volkswagen T-Cross
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 Volkswagen T-Cross: The different leaks
In the case of leaking diesel injectors on your Volkswagen T-Cross, there are three several sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform with time, 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 Volkswagen T-Cross 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 encounter 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 article on the presence of oil leaking on your Volkswagen T-Cross.
Leaking injector on my Volkswagen T-Cross, 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 linked, as we have seen previously, to a worn seal as a result of the pressures endured. 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 carried out…
- Masking you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Relating to the repair part of your leak, it will regularly be restricted to swapping the seals that have failed:
- Situate the source of the leak
- Take apart the injector in question
- Change the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not necessarily difficult, but if you have the smallest doubt in the treatment of your injector that leaks on your Volkswagen T-Cross, we suggest you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Volkswagen T-Cross.
To find more tips on the Volkswagen T-Cross, take a look at the Volkswagen T-Cross category.
