In the event that you are aware of unusual signs on your car, you are right to be preoccupied, because a car represents a huge annual budget and unexpected malfunctions don’t reduce the costs. So what if you feel as if you have a leaking injector on your Lexus GX? You probably figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or abnormal black smoke. These three signs of illness are the main indicators of a leaking injector. As this problem can lead to more severe engine trouble on your car, we made a decision to write this content page to help you ensure the failure of a leaking injector and handle it correctly. To achieve this, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Lexus GX.
Leaking injector on my petrol Lexus GX
It is crucial 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 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 Lexus GX: The different leaks
It should be said that injector leaks on a Lexus GX equipped with a petrol engine are pretty rare. This is as a result of the much lower pressure in the petrol intake systems. Even so, 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 component 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 suffer 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 Lexus GX
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 Lexus GX: The different leaks
In the case of leaking diesel injectors on your Lexus GX, there are three several kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform in the long run, commonly the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Lexus GX 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 find an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we recommend you to browse this content page on the presence of oil leaking on your Lexus GX.
Leaking injector on my Lexus GX, how to fix the leak
And finally, we’re going to take a look at how to fix a leaking injector on your car. Regularly a leak is linked, as we have seen sooner, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is completed…
- Masking 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 oftentimes be limited to swapping the seals that have failed:
- Identify 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 inevitably very hard, but if you have the smallest hesitation in the treatment of your injector that leaks on your Lexus GX, we recommend you to get closer to your auto mechanic to avoid any bad manipulation that could seriously harm the condition of your Lexus GX.
If perhaps you have any additional questions about the Lexus GX, do not hesitate to consult our Lexus GX category.
