In the event you are alert of abnormal signs on your vehicle, you are right to be intrigued, because a car represents a massive annual budget and unpredicted malfunctions don’t reduce the costs. So what if you sense that you have a leaking injector on your Volkswagen Caddy 3? You most likely figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or abnormal black smoke. These three signs of illness are the main indicators of a leaking injector. As this failure can end up in more significant engine concerns on your car, we thought we would write this article to help you validate the failure of a leaking injector and treat it correctly. To do this, we will initially take a look at the circumstance of gasoline injectors and then at those of diesel injectors Volkswagen Caddy 3.

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Leaking injector on my petrol Volkswagen Caddy 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 types 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 Caddy 3: The different leaks

It should be known that injector leaks on a Volkswagen Caddy 3 equipped with a petrol engine are pretty rare. This is caused by 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 plausible 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 encounter a leak coming from the lower portion of the injector of your car, this one will come from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Volkswagen Caddy 3

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure produces 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 Caddy 3: The different leaks

In the circumstance of leaking diesel injectors on your Volkswagen Caddy 3, there are three several types of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform as time passes, commonly 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 Caddy 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 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 encourage you to consult this article on the existence of oil leaking on your Volkswagen Caddy 3.

Leaking injector on my Volkswagen Caddy 3, how to fix the leak

And to finish, we’re going to take a look at how to fix a leaking injector on your car. Regularly a leak is associated, 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 gigantic, specifically on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is done…
  • Covering 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 oftentimes be limited to changing 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 respect with the manufacturer’s standards.

In all situations, these interventions are not inevitably complex, but if you have the slightest hesitation in the treatment of your injector that leaks on your Volkswagen Caddy 3, we encourage you to get closer to your repair shop to avoid any bad manipulation that could seriously harm the condition of your Volkswagen Caddy 3.

To get more tips on the Volkswagen Caddy 3, take a look at the Volkswagen Caddy 3 category.