Whenever you are aware of unusual symptoms on your car, you are right to be concerned, because a car represents a massive annual budget and sudden malfunctions don’t reduce the expenses. So what if you sense that you have a leaking injector on your Toyota Auris 2? You likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or unusual black smoke. These three manifestations are the main signs of a leaking injector. As this failure can bring about more critical engine concerns on your car, we made a decision to prepare this content to help you verify the failure of a leaking injector and handle it properly. To accomplish this, we will initially look into the circumstance of gasoline injectors and then at those of diesel injectors Toyota Auris 2.
Leaking injector on my petrol Toyota Auris 2
It is important to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two kind of engines makes the injection distinct. 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 Auris 2: The different leaks
It should be noted that injector leaks on a Toyota Auris 2 equipped with a petrol engine are rather infrequent. This is caused by the much lower pressure in the petrol intake systems. Even so, there are two kind 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 part that is attached to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may suffer a leak coming from the lower part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen before.
Leaking injector on my diesel Toyota Auris 2
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure produces 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 Auris 2: The different leaks
In the circumstance of leaking diesel injectors on your Toyota Auris 2, there are three different kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform in the long run, 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 Toyota Auris 2 will be the result of 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 feel an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we suggest you to read this content on the existence of oil leaking on your Toyota Auris 2.
Leaking injector on my Toyota Auris 2, how to fix the leak
And finally, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is linked, as we have seen prior to this, to a worn seal because of the pressures endured. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is carried out…
- 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 oftentimes be restricted to swapping the seals that have failed:
- Find out 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 respect with the manufacturer’s standards.
In all cases, these interventions are not specifically complicated, but if you have the smallest doubt in the treatment of your injector that leaks on your Toyota Auris 2, we suggest you to get closer to your mechanic to avoid any bad handling that could severely harm the condition of your Toyota Auris 2.
If you have any further questions about the Toyota Auris 2, do not hesitate to consult our Toyota Auris 2 category.
