In cases where you are alert of abnormal symptoms on your automobile, you are right to be preoccupied, because a car represents a big annual budget and surprising malfunctions don’t lower the bill. So what if you think that you have a leaking injector on your Toyota Aygo? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or abnormal black smoke. These three signs of illness are the main symptoms of a leaking injector. As this problem can produce more critical engine complications on your car, we thought we would compose this content page to help you validate the failure of a leaking injector and handle it properly. To do this, we will initially look at the case of gasoline injectors and then at those of diesel injectors Toyota Aygo.
Leaking injector on my petrol Toyota Aygo
It is important to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two types of engines makes the injection different. The essential 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 Toyota Aygo: The different leaks
It should be mentioned that injector leaks on a Toyota Aygo equipped with a petrol engine are rather infrequent. This is due to 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 plausible that you have a leak from the top of the injector, this is the part that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may experience a leak coming from the lower portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Toyota Aygo
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: The different leaks
In the case of leaking diesel injectors on your Toyota Aygo, there are three different types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform with time, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Toyota Aygo 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 annoying, it is the junction between the engine and the injector nose that leaks at a copper seal, you should feel 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 browse this content page on the existence of oil leaking on your Toyota Aygo.
Leaking injector on my Toyota Aygo, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen sooner, to a worn seal because of the pressures endured. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some measures:
- 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.
Relating to the repair part of your leak, it will frequently be restricted to changing the seals that have failed:
- Situate 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 situations, these interventions are not necessarily very hard, but if you have the smallest doubt in the treatment of your injector that leaks on your Toyota Aygo, we recommend you to get closer to your auto technician to avoid any bad handling that could seriously harm the condition of your Toyota Aygo.
To get more tips on the Toyota Aygo, take a look at the Toyota Aygo category.
