In the event that you are aware of irregular symptoms on your automobile, you are right to be preoccupied, because a car represents a huge annual budget and unpredicted breakdowns don’t reduce the expenses. So what if you feel like you have a leaking injector on your Volkswagen Caddy? You likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or strange black smoke. These three manifestations are the main signals of a leaking injector. As this failure can produce more serious engine problems on your car, we decided to publish this article content to help you validate the failure of a leaking injector and handle it correctly. To do this, we will initially check out the circumstance of gasoline injectors and then at those of diesel injectors Volkswagen Caddy.
Leaking injector on my petrol Volkswagen Caddy
It is fundamental to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two sort of engines makes the injection distinct. 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 Caddy: The different leaks
It should be mentioned that injector leaks on a Volkswagen Caddy equipped with a petrol engine are rather rare. This is caused by the much lower pressure in the petrol intake systems. Even so, there are two sort 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 component that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may suffer a leak coming from the lower part of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen before.
Leaking injector on my diesel Volkswagen Caddy
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 Caddy: The different leaks
In the circumstance of leaking diesel injectors on your Volkswagen Caddy, there are three different sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform over time, generally 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 Caddy 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 bothersome, 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 verifying you have oil leaking but it does not come from your injectors, we recommend you to read this article content on the existence of oil leaking on your Volkswagen Caddy.
Leaking injector on my Volkswagen Caddy, how to fix the leak
And at last, we’re going to check out how to fix a leaking injector on your car. Regularly a leak is linked, as we have seen sooner, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is conducted…
- 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 very often be limited to replacing the seals that have failed:
- Identify 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 accordance with the manufacturer’s standards.
In all cases, these interventions are not inevitably complex, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Volkswagen Caddy, we recommend you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Volkswagen Caddy.
To discover more tips on the Volkswagen Caddy, take a look at the Volkswagen Caddy category.
