If you are alert of irregular signs on your vehicle, you are right to be worried, because a car represents a big annual budget and surprising malfunctions don’t lower the expenses. So what if you find that you have a leaking injector on your Toyota Aygo 2? You probably figured it out thanks to black/oily drips along your engine, or a troubled idle, or abnormal black smoke. These three signs of illness are the main symptoms of a leaking injector. As this troubles can bring on more serious engine problems on your car, we thought we would compose this content page to help you verify the failure of a leaking injector and handle it properly. To do so, we will initially look into the case of gasoline injectors and then at those of diesel injectors Toyota Aygo 2.
Leaking injector on my petrol Toyota Aygo 2
It is important to know that the injectors on petrol and diesel engines are different, in reality, 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 Toyota Aygo 2: The different leaks
It should be mentioned that injector leaks on a Toyota Aygo 2 equipped with a petrol engine are rather infrequent. 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 conceivable that you have a leak from the top of the injector, this is the component 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 occur from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Toyota Aygo 2
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Toyota Aygo 2: The different leaks
In the case of leaking diesel injectors on your Toyota Aygo 2, there are three different types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform over time, commonly the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Toyota Aygo 2 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 troublesome, 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 browse this content page on the presence of oil leaking on your Toyota Aygo 2.
Leaking injector on my Toyota Aygo 2, 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 linked, as we have seen sooner, to a worn seal due to the pressures suffered. 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 completed…
- 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 replacing the seals that have failed:
- Find out 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 cases, these interventions are not necessarily complicated, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Toyota Aygo 2, we advise you to get closer to your auto technician to avoid any bad manipulation that could severely harm the condition of your Toyota Aygo 2.
If you want more guides on the Toyota Aygo 2, go to our Toyota Aygo 2 category.
