In the event you are aware of unusual symptoms on your automobile, you are right to be worried, because a car represents a massive annual budget and sudden malfunctions don’t lower the expenses. So what if you find that you have a leaking injector on your Volkswagen Touran 3? You most likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or unusual black smoke. These three signs of illness are the main indicators of a leaking injector. As this failure can cause more critical engine problems on your car, we made a decision to publish this article content to help you confirm the failure of a leaking injector and handle it properly. To achieve this, we will first look at the case of gasoline injectors and then at those of diesel injectors Volkswagen Touran 3.
Leaking injector on my petrol Volkswagen Touran 3
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 key 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 Touran 3: The different leaks
It should be noted that injector leaks on a Volkswagen Touran 3 equipped with a petrol engine are rather infrequent. This is as a result of the much lower pressure in the petrol intake systems. However, there are two kind 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 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 suffer a leak coming from the lower part 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 Touran 3
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Touran 3: The different leaks
In the case of leaking diesel injectors on your Volkswagen Touran 3, there are three several kind of leaks:
- Leakage from the injector inlet:
In this instance, 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 reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Touran 3 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 experience 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 consult this article content on the presence of oil leaking on your Volkswagen Touran 3.
Leaking injector on my Volkswagen Touran 3, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Oftentimes a leak is associated, as we have seen prior to this, to a worn seal as a result of the pressures endured. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some precautions:
- 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.
Relating to the repair part of your leak, it will frequently be restricted to replacing the seals that have failed:
- Discover the source of the leak
- Take apart the injector in question
- Replace 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 automatically complex, but if you have the smallest doubt in the treatment of your injector that leaks on your Volkswagen Touran 3, we advise you to get closer to your motor mechanic to avoid any bad handling that could significantly harm the condition of your Volkswagen Touran 3.
If you need more guides on the Volkswagen Touran 3, go to our Volkswagen Touran 3 category.
