In cases where you are aware of unusual signs on your vehicle, you are right to be worried, because a car represents a massive annual budget and surprising breakdowns don’t reduce the costs. So what if you think that you have a leaking injector on your Toyota Avensis? You most likely figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three signs of illness are the main signs of a leaking injector. As this problem can lead to more critical engine problems on your car, we made a decision to write this article to help you ensure the failure of a leaking injector and handle it correctly. To accomplish this, we will first take a look at the circumstance of gasoline injectors and then at those of diesel injectors Toyota Avensis.
Leaking injector on my petrol Toyota Avensis
It is fundamental to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two sort of engines makes the injection different. 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 Avensis: The different leaks
It should be known that injector leaks on a Toyota Avensis equipped with a petrol engine are pretty rare. This is due to the much lower pressure in the petrol intake systems. However, 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 component that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may encounter a leak coming from the lower part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Toyota Avensis
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 Avensis: The different leaks
In the circumstance of leaking diesel injectors on your Toyota Avensis, there are three different sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform with time, 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 Avensis 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 encourage you to browse this article on the presence of oil leaking on your Toyota Avensis.
Leaking injector on my Toyota Avensis, how to fix the leak
And at last, we’re going to take a look at how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen sooner, to a worn seal because of the pressures endured. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is carried out…
- 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 frequently be restricted to swapping 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 automatically complex, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Toyota Avensis, we encourage you to get closer to your repair shop to avoid any bad manipulation that could significantly harm the condition of your Toyota Avensis.
To discover more tips on the Toyota Avensis, take a look at the Toyota Avensis category.
