In the event you are aware of abnormal symptoms on your car, you are right to be concerned, because a car represents a massive annual budget and surprising breakdowns don’t reduce the expenses. So what if you find that you have a leaking injector on your seat leon? You probably figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unconventional black smoke. These three signs of illness are the main symptoms of a leaking injector. As this troubles can end up in more severe engine trouble on your car, we made a decision to write this article to help you ensure the failure of a leaking injector and handle it properly. To achieve this, we will first of all look into the case of gasoline injectors and then at those of diesel injectors seat leon.
Leaking injector on my petrol seat leon
It is crucial to know that the injectors on petrol and diesel engines are distinct, in reality, the difference in combustion between these two types 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 seat leon: The different leaks
It should be said that injector leaks on a seat leon equipped with a petrol engine are rather infrequent. This is caused by the much lower pressure in the petrol intake systems. Nevertheless, there are two types of leaks:
- Leakage from the top of the injector:
It is possible that you have a leak from the top of the injector, this is the component 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 part 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 seat leon
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 seat leon: The different leaks
In the case of leaking diesel injectors on your seat leon, there are three several types of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform along with time, in most cases 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 seat leon will be caused by 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 experience an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we recommend you to read this article on the presence of oil leaking on your seat leon.
Leaking injector on my seat leon, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is linked, as we have seen previously, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is enormous, 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.
Relating to the repair part of your leak, it will frequently be limited to swapping the seals that have failed:
- Identify the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not specifically complex, but if you have the tiniest doubt in the treatment of your injector that leaks on your seat leon, we recommend you to get closer to your motor mechanic to avoid any bad handling that could severely harm the condition of your seat leon.
If you want more guides on the seat leon, go to our seat leon category.
