Whenever you are aware of abnormal signs on your vehicle, you are right to be concerned, because a car represents a massive annual budget and unforeseen breakdowns don’t reduce the costs. So what if you feel as if you have a leaking injector on your Toyota Hilux 3? You likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or strange black smoke. These three signs of illness are the main symptoms of a leaking injector. As this problem can cause more serious engine concerns on your car, we chose to publish this article content to help you ensure the failure of a leaking injector and treat it properly. To do so, we will first check out the circumstance of gasoline injectors and then at those of diesel injectors Toyota Hilux 3.
Leaking injector on my petrol Toyota Hilux 3
It is essential to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two types of engines makes the injection different. The biggest difference lies in the pressure undergone 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 Hilux 3: The different leaks
It should be mentioned that injector leaks on a Toyota Hilux 3 equipped with a petrol engine are pretty rare. This is because of the much lower pressure in the petrol intake systems. However, there are two types 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 connected 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 part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Toyota Hilux 3
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 Hilux 3: The different leaks
In the circumstance of leaking diesel injectors on your Toyota Hilux 3, there are three different types of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform along with time, generally 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 Hilux 3 will be caused by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most annoying, 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 verifying you have oil leaking but it does not come from your injectors, we encourage you to browse this article content on the existence of oil leaking on your Toyota Hilux 3.
Leaking injector on my Toyota Hilux 3, how to fix the leak
And finally, we’re going to check out how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen previously, to a worn seal as a result 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 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 limited to replacing the seals that have failed:
- Identify the source of the leak
- Take apart the injector in question
- Replace 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 inevitably complicated, but if you have the slightest hesitation in the treatment of your injector that leaks on your Toyota Hilux 3, we encourage you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Toyota Hilux 3.
If you need more guides on the Toyota Hilux 3, go to our Toyota Hilux 3 category.
