Whenever you are informed of abnormal signs on your car, you are right to be worried, because a car represents a massive annual budget and unexpected breakdowns don’t lower the costs. So what if you feel like you have a leaking injector on your Toyota Verso? 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 signals of a leaking injector. As this troubles can cause more severe engine problems on your car, we decided to compose this article to help you confirm the failure of a leaking injector and treat it correctly. To do so, we will first of all take a look at the case of gasoline injectors and then at those of diesel injectors Toyota Verso.
Leaking injector on my petrol Toyota Verso
It is important to know that the injectors on petrol and diesel engines are distinct, the truth is, the difference in combustion between these two kind of engines makes the injection distinct. The main 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 Verso: The different leaks
It should be said that injector leaks on a Toyota Verso equipped with a petrol engine are rather infrequent. This is because of the much lower pressure in the petrol intake systems. However, 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 linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may encounter 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 Verso
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 Toyota Verso: The different leaks
In the case of leaking diesel injectors on your Toyota Verso, there are three several kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform along with 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 Verso will be a consequence of 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 checking you have oil leaking but it does not come from your injectors, we recommend you to consult this article on the presence of oil leaking on your Toyota Verso.
Leaking injector on my Toyota Verso, how to fix the leak
And to finish, we’re going to take a look at how to fix a leaking injector on your car. Oftentimes a leak is associated, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is conducted…
- Masking you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Regarding the repair part of your leak, it will very often be limited to swapping 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 assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all cases, these interventions are not automatically difficult, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Toyota Verso, we recommend you to get closer to your repair shop to avoid any bad manipulation that could significantly harm the condition of your Toyota Verso.
If you need more guides on the Toyota Verso, go to our Toyota Verso category.
