If you are alert of irregular symptoms on your car, you are right to be preoccupied, because a car represents a massive annual budget and sudden malfunctions don’t reduce the costs. So what if you sense that you have a leaking injector on your Volkswagen Crafter? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or unusual black smoke. These three symptoms are the main symptoms of a leaking injector. As this troubles can bring on more serious engine complications on your car, we thought we would prepare this article content to help you verify the failure of a leaking injector and handle it properly. To accomplish this, we will initially take a look at the case of gasoline injectors and then at those of diesel injectors Volkswagen Crafter.
Leaking injector on my petrol Volkswagen Crafter
It is crucial to know that the injectors on petrol and diesel engines are distinct, in reality, the difference in combustion between these two types of engines makes the injection distinct. The main 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 Crafter: The different leaks
It should be said that injector leaks on a Volkswagen Crafter equipped with a petrol engine are pretty rare. This is as a result of the much lower pressure in the petrol intake systems. However, there are two types 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 part that is attached 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 part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen before.
Leaking injector on my diesel Volkswagen Crafter
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 Crafter: The different leaks
In the case of leaking diesel injectors on your Volkswagen Crafter, there are three several types of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform in the long run, generally the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Crafter 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 bothersome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should feel 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 existence of oil leaking on your Volkswagen Crafter.
Leaking injector on my Volkswagen Crafter, how to fix the leak
And finally, we’re going to take a look at how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen sooner, to a worn seal due to the pressures endured. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is conducted…
- 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 replacing the seals that have failed:
- Find 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 accordance with the manufacturer’s standards.
In all situations, these interventions are not necessarily very hard, but if you have the slightest hesitation in the treatment of your injector that leaks on your Volkswagen Crafter, we advise you to get closer to your repair shop to avoid any bad manipulation that could severely harm the condition of your Volkswagen Crafter.
To discover more tips on the Volkswagen Crafter, take a look at the Volkswagen Crafter category.
