If you are informed of abnormal symptoms on your vehicle, you are right to be worried, because a car represents a huge annual budget and unpredicted malfunctions don’t lower the expenses. So what if you feel like you have a leaking injector on your Toyota Prius? You probably figured it out thanks to black/oily drips along your engine, or a disturbed idle, or unusual black smoke. These three symptoms are the main indicators of a leaking injector. As this failure can bring on more significant engine complications on your car, we thought we would produce this article content to help you confirm the failure of a leaking injector and handle it correctly. To achieve this, we will initially look at the case of gasoline injectors and then at those of diesel injectors Toyota Prius.
Leaking injector on my petrol Toyota Prius
It is vital to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two types of engines makes the injection distinct. The biggest 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 Prius: The different leaks
It should be noted that injector leaks on a Toyota Prius equipped with a petrol engine are rather infrequent. This is because of 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 connected to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may experience a leak coming from the lower part of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen before.
Leaking injector on my diesel Toyota Prius
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 Prius: The different leaks
In the case of leaking diesel injectors on your Toyota Prius, there are three several types of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform in the long run, generally the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Toyota Prius 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 bothersome, 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 consult this article content on the existence of oil leaking on your Toyota Prius.
Leaking injector on my Toyota Prius, 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 as a result of the pressures endured. But think that the pressure in the circuit is tremendous, 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.
Concerning the repair part of your leak, it will frequently be limited to swapping the seals that have failed:
- Discover 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 situations, these interventions are not specifically complicated, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Toyota Prius, we advise you to get closer to your auto mechanic to avoid any bad manipulation that could critically harm the condition of your Toyota Prius.
If you need more tutorials on the Toyota Prius, go to our Toyota Prius category.
