In the event you are informed of abnormal signs on your vehicle, you are right to be intrigued, because a car represents a big annual budget and sudden breakdowns don’t lower the bill. So what if you feel as if you have a leaking injector on your skoda octavia? You likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or uncommon black smoke. These three symptoms are the main signals of a leaking injector. As this failure can produce more severe engine problems on your car, we decided to write this content page to help you validate the failure of a leaking injector and treat it correctly. To achieve this, we will initially look into the case of gasoline injectors and then at those of diesel injectors skoda octavia.
Leaking injector on my petrol skoda octavia
It is crucial to know that the injectors on petrol and diesel engines are distinct, actually, 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 octavia: The different leaks
It should be noted that injector leaks on a skoda octavia equipped with a petrol engine are rather rare. 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 attached 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 portion 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 skoda octavia
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 octavia: The different leaks
In the case of leaking diesel injectors on your skoda octavia, there are three different sort of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform as time passes, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your skoda octavia will be caused 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 encounter an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we advise you to read this content page on the presence of oil leaking on your skoda octavia.
Leaking injector on my skoda octavia, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Very often a leak is connected, as we have seen previously, to a worn seal because of the pressures endured. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is carried out…
- 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 swapping 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 specifically complicated, but if you have the smallest uncertainty in the treatment of your injector that leaks on your skoda octavia, we advise you to get closer to your repair shop to avoid any bad handling that could significantly harm the condition of your skoda octavia.
To find more tips on the skoda octavia, take a look at the skoda octavia category.
