Whenever you are alert of irregular 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 bill. So what if you find that you have a leaking injector on your skoda fabia? You most likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or abnormal black smoke. These three signs of illness are the main symptoms of a leaking injector. As this problem can cause more significant engine complications on your car, we thought we would prepare this content to help you verify the failure of a leaking injector and handle it properly. To achieve this, we will first look at the case of gasoline injectors and then at those of diesel injectors skoda fabia.
Leaking injector on my petrol skoda fabia
It is vital to know that the injectors on petrol and diesel engines are distinct, the truth is, the difference in combustion between these two sort of engines makes the injection distinct. The biggest 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 skoda fabia: The different leaks
It should be known that injector leaks on a skoda fabia equipped with a petrol engine are rather infrequent. This is due to 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 portion that is connected 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 previously.
Leaking injector on my diesel skoda fabia
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 skoda fabia: The different leaks
In the case of leaking diesel injectors on your skoda fabia, there are three different sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform along with time, usually the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your skoda fabia will be a consequence of an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most annoying, 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 consult this content on the presence of oil leaking on your skoda fabia.
Leaking injector on my skoda fabia, how to fix the leak
And at last, we’re going to look at how to fix a leaking injector on your car. Very often a leak is linked, as we have seen sooner, to a worn seal as a result of the pressures endured. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is done…
- Masking 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 limited to changing the seals that have failed:
- Find the source of the leak
- Dismantle 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 automatically very hard, but if you have the smallest uncertainty in the treatment of your injector that leaks on your skoda fabia, we suggest you to get closer to your motor mechanic to avoid any bad handling that could significantly harm the condition of your skoda fabia.
Whenever you have any additional questions about the skoda fabia, do not hesitate to consult our skoda fabia category.
