In the event you are informed of irregular signs on your automobile, you are right to be intrigued, 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 Beetle? You likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three signs of illness are the main symptoms of a leaking injector. As this troubles can cause more critical engine complications on your car, we decided to prepare this content page to help you validate the failure of a leaking injector and handle it properly. To achieve this, we will initially look into the case of gasoline injectors and then at those of diesel injectors Volkswagen Beetle.
Leaking injector on my petrol Volkswagen Beetle
It is crucial to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two sort 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 Beetle: The different leaks
It should be noted that injector leaks on a Volkswagen Beetle equipped with a petrol engine are pretty infrequent. This is because of the much lower pressure in the petrol intake systems. Nevertheless, 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 connected 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 come from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Volkswagen Beetle
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 Beetle: The different leaks
In the case of leaking diesel injectors on your Volkswagen Beetle, there are three several sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform after a while, commonly the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Volkswagen Beetle will be caused 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 experience an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we suggest you to browse this content page on the presence of oil leaking on your Volkswagen Beetle.
Leaking injector on my Volkswagen Beetle, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is associated, as we have seen prior to this, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is monumental, 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.
Relating to the repair part of your leak, it will oftentimes be limited to swapping the seals that have failed:
- Find 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 complex, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Volkswagen Beetle, we suggest you to get closer to your repair shop to avoid any bad manipulation that could severely harm the condition of your Volkswagen Beetle.
To get more tips on the Volkswagen Beetle, take a look at the Volkswagen Beetle category.
