In cases where you are aware of irregular symptoms on your car, you are right to be preoccupied, because a car represents a big annual budget and unpredicted malfunctions don’t lower the expenses. So what if you feel as if you have a leaking injector on your Volkswagen Up!? You probably figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or unusual black smoke. These three signs of illness are the main symptoms of a leaking injector. As this troubles can lead to more severe engine trouble on your car, we made a decision to publish this article content to help you verify the failure of a leaking injector and deal with it properly. To do this, we will first take a look at the circumstance of gasoline injectors and then at those of diesel injectors Volkswagen Up!.
Leaking injector on my petrol Volkswagen Up!
It is vital to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two sort of engines makes the injection different. The essential 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 Up!: The different leaks
It should be said that injector leaks on a Volkswagen Up! equipped with a petrol engine are pretty infrequent. This is resulting from 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 possible that you have a leak from the top of the injector, this is the component that is linked 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 part 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 Volkswagen Up!
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 Volkswagen Up!: The different leaks
In the circumstance of leaking diesel injectors on your Volkswagen Up!, there are three several sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform as time passes, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Up! 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 find an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we advise you to read this article content on the existence of oil leaking on your Volkswagen Up!.
Leaking injector on my Volkswagen Up!, how to fix the leak
And finally, we’re going to take a look at how to fix a leaking injector on your car. Oftentimes a leak is linked, as we have seen previously, to a worn seal caused by 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…
- 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 frequently be limited to swapping the seals that have failed:
- Situate 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 accordance with the manufacturer’s standards.
In all situations, these interventions are not automatically very hard, but if you have the smallest doubt in the treatment of your injector that leaks on your Volkswagen Up!, we advise you to get closer to your auto technician to avoid any bad manipulation that could severely harm the condition of your Volkswagen Up!.
To find more tips on the Volkswagen Up!, take a look at the Volkswagen Up! category.
