If you are alert of abnormal symptoms on your automobile, you are right to be worried, because a car represents a massive annual budget and sudden breakdowns don’t reduce the costs. So what if you think that you have a leaking injector on your Volkswagen Multivan? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or unconventional black smoke. These three signs of illness are the main signals of a leaking injector. As this troubles can bring on more serious engine problems on your car, we chose to compose this article content to help you confirm the failure of a leaking injector and handle it correctly. To achieve this, we will first check out the circumstance of gasoline injectors and then at those of diesel injectors Volkswagen Multivan.
Leaking injector on my petrol Volkswagen Multivan
It is important to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two kind of engines makes the injection different. The biggest 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 Multivan: The different leaks
It should be said that injector leaks on a Volkswagen Multivan equipped with a petrol engine are pretty infrequent. This is caused by the much lower pressure in the petrol intake systems. Nevertheless, there are two kind 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 linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may suffer a leak coming from the lower part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Volkswagen Multivan
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 Multivan: The different leaks
In the circumstance of leaking diesel injectors on your Volkswagen Multivan, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform as time passes, usually 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 Multivan will be a consequence of 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 experience 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 browse this article content on the presence of oil leaking on your Volkswagen Multivan.
Leaking injector on my Volkswagen Multivan, how to fix the leak
And finally, we’re going to check out how to fix a leaking injector on your car. Regularly a leak is linked, as we have seen previously, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some safety 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.
Regarding the repair part of your leak, it will frequently be limited to swapping 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 cases, these interventions are not automatically complicated, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Volkswagen Multivan, we advise you to get closer to your repair shop to avoid any bad handling that could critically harm the condition of your Volkswagen Multivan.
In the event that you have any additional questions about the Volkswagen Multivan, do not hesitate to consult our Volkswagen Multivan category.
