In cases where 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 lower the bill. So what if you find that you have a leaking injector on your Volkswagen Transporter 6? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or uncommon black smoke. These three manifestations are the main signs of a leaking injector. As this failure can bring about more severe engine concerns on your car, we decided to produce this content to help you validate the failure of a leaking injector and treat it properly. To do so, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Volkswagen Transporter 6.
Leaking injector on my petrol Volkswagen Transporter 6
It is essential 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 main 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 Transporter 6: The different leaks
It should be known that injector leaks on a Volkswagen Transporter 6 equipped with a petrol engine are rather rare. This is resulting from the much lower pressure in the petrol intake systems. However, 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 part 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 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 Volkswagen Transporter 6
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Transporter 6: The different leaks
In the case of leaking diesel injectors on your Volkswagen Transporter 6, there are three different sort of leaks:
- Leakage from the injector inlet:
In this case, 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 concerns the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Transporter 6 will be caused 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 find an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we advise you to consult this content on the existence of oil leaking on your Volkswagen Transporter 6.
Leaking injector on my Volkswagen Transporter 6, how to fix the leak
And at last, 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 previously, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some measures:
- 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 oftentimes be limited to changing the seals that have failed:
- Find out the source of the leak
- Take apart the injector in question
- Change the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all situations, these interventions are not necessarily complex, but if you have the smallest hesitation in the treatment of your injector that leaks on your Volkswagen Transporter 6, we advise you to get closer to your motor mechanic to avoid any bad manipulation that could seriously harm the condition of your Volkswagen Transporter 6.
To get more tips on the Volkswagen Transporter 6, take a look at the Volkswagen Transporter 6 category.
