In cases where you are aware of unusual symptoms on your automobile, you are right to be concerned, because a car represents a big annual budget and sudden malfunctions don’t lower the costs. So what if you feel like you have a leaking injector on your Volkswagen ID.4? You most likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three manifestations are the main symptoms of a leaking injector. As this problem can bring on more significant engine problems on your car, we thought we would prepare this content to help you confirm the failure of a leaking injector and handle it correctly. To do so, we will first of all take a look at the case of gasoline injectors and then at those of diesel injectors Volkswagen ID.4.
Leaking injector on my petrol Volkswagen ID.4
It is fundamental to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two types of engines makes the injection distinct. The key 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 Volkswagen ID.4: The different leaks
It should be known that injector leaks on a Volkswagen ID.4 equipped with a petrol engine are pretty rare. This is resulting from the much lower pressure in the petrol intake systems. However, 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 portion 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 appear from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Volkswagen ID.4
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system creates 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 ID.4: The different leaks
In the case of leaking diesel injectors on your Volkswagen ID.4, there are three different types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform in the long run, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen ID.4 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 annoying, 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 browse this content on the existence of oil leaking on your Volkswagen ID.4.
Leaking injector on my Volkswagen ID.4, how to fix the leak
And to finish, we’re going to take a look at how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen sooner, 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 safety measures:
- 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 oftentimes be restricted to changing the seals that have failed:
- Identify 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 specifically difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Volkswagen ID.4, we suggest you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Volkswagen ID.4.
To get more tips on the Volkswagen ID.4, take a look at the Volkswagen ID.4 category.
