If you are alert of unusual signs on your vehicle, you are right to be preoccupied, because a car represents a massive annual budget and surprising malfunctions don’t reduce the expenses. So what if you feel as if you have a leaking injector on your Volkswagen Crafter 2? You almost certainly figured it out thanks to black/oily drips along your engine, or a troubled idle, or abnormal black smoke. These three symptoms are the main signs of a leaking injector. As this failure can bring about more critical engine trouble on your car, we made a decision to compose this content to help you validate the failure of a leaking injector and handle it properly. To accomplish this, we will first look at the circumstance of gasoline injectors and then at those of diesel injectors Volkswagen Crafter 2.
Leaking injector on my petrol Volkswagen Crafter 2
It is vital to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two kind of engines makes the injection different. The essential 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 Crafter 2: The different leaks
It should be mentioned that injector leaks on a Volkswagen Crafter 2 equipped with a petrol engine are pretty rare. 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 possible that you have a leak from the top of the injector, this is the component 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 before.
Leaking injector on my diesel Volkswagen Crafter 2
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 Crafter 2: The different leaks
In the circumstance of leaking diesel injectors on your Volkswagen Crafter 2, there are three several kind of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform with time, 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 Crafter 2 will be brought on by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most troublesome, 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 suggest you to browse this content on the presence of oil leaking on your Volkswagen Crafter 2.
Leaking injector on my Volkswagen Crafter 2, how to fix the leak
And finally, we’re going to 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 as a result of the pressures endured. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is achieved…
- Covering 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 restricted to replacing the seals that have failed:
- Situate the source of the leak
- Dismantle the injector in question
- Change 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 doubt in the treatment of your injector that leaks on your Volkswagen Crafter 2, we suggest you to get closer to your auto technician to avoid any bad manipulation that could severely harm the condition of your Volkswagen Crafter 2.
To discover more tips on the Volkswagen Crafter 2, take a look at the Volkswagen Crafter 2 category.
