If you are alert of unusual symptoms on your car, you are right to be worried, because a car represents a massive annual budget and unforeseen breakdowns don’t reduce the expenses. So what if you find that you have a leaking injector on your Volkswagen Transporter 5? You almost certainly figured it out thanks to black/oily drips along your engine, or a disturbed idle, or unconventional black smoke. These three manifestations are the main indicators of a leaking injector. As this failure can cause more serious engine complications on your car, we thought we would publish this article to help you confirm the failure of a leaking injector and handle it correctly. To do this, we will first of all check out the case of gasoline injectors and then at those of diesel injectors Volkswagen Transporter 5.
Leaking injector on my petrol Volkswagen Transporter 5
It is important to know that the injectors on petrol and diesel engines are different, in fact, the difference in combustion between these two sort of engines makes the injection different. The essential 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 Transporter 5: The different leaks
It should be noted that injector leaks on a Volkswagen Transporter 5 equipped with a petrol engine are rather infrequent. This is caused by 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 portion that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may encounter 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 5
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 Transporter 5: The different leaks
In the case of leaking diesel injectors on your Volkswagen Transporter 5, there are three different sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform in the long run, commonly the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Transporter 5 will be the result 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 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 on the presence of oil leaking on your Volkswagen Transporter 5.
Leaking injector on my Volkswagen Transporter 5, 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 connected, as we have seen previously, to a worn seal because of the pressures endured. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:
- 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.
Relating to the repair part of your leak, it will frequently be restricted to changing the seals that have failed:
- Locate the source of the leak
- Dismantle 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 difficult, but if you have the smallest hesitation in the treatment of your injector that leaks on your Volkswagen Transporter 5, we advise you to get closer to your auto technician to avoid any bad handling that could critically harm the condition of your Volkswagen Transporter 5.
In the event that you have any additional questions about the Volkswagen Transporter 5, do not hesitate to consult our Volkswagen Transporter 5 category.
