In the event you are aware of abnormal symptoms on your automobile, you are right to be worried, because a car represents a huge annual budget and sudden malfunctions don’t reduce the costs. So what if you feel as if you have a leaking injector on your Toyota Corolla Verso? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or unusual black smoke. These three manifestations are the main symptoms of a leaking injector. As this troubles can produce more critical engine trouble on your car, we thought we would write this article content to help you validate the failure of a leaking injector and deal with it properly. To achieve this, we will initially look into the circumstance of gasoline injectors and then at those of diesel injectors Toyota Corolla Verso.
Leaking injector on my petrol Toyota Corolla Verso
It is vital to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two sort 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 Corolla Verso: The different leaks
It should be known that injector leaks on a Toyota Corolla Verso equipped with a petrol engine are pretty infrequent. 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 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 portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Toyota Corolla Verso
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Corolla Verso: The different leaks
In the circumstance of leaking diesel injectors on your Toyota Corolla Verso, there are three several sort of leaks:
- Leakage from the injector inlet:
In cases like this, 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 Corolla Verso 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 bothersome, 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 verifying you have oil leaking but it does not come from your injectors, we encourage you to consult this article content on the presence of oil leaking on your Toyota Corolla Verso.
Leaking injector on my Toyota Corolla Verso, how to fix the leak
And finally, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is conducted…
- 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 changing the seals that have failed:
- Locate the source of the leak
- Take apart 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 cases, these interventions are not necessarily difficult, but if you have the slightest hesitation in the treatment of your injector that leaks on your Toyota Corolla Verso, we encourage you to get closer to your auto mechanic to avoid any bad handling that could severely harm the condition of your Toyota Corolla Verso.
If you want more tutorials on the Toyota Corolla Verso, go to our Toyota Corolla Verso category.
