In the event that you are alert of abnormal symptoms on your car, you are right to be preoccupied, because a car represents a big annual budget and unexpected malfunctions don’t lower the bill. So what if you feel like you have a leaking injector on your Lexus RX? You almost certainly figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or uncommon black smoke. These three signs of illness are the main indicators of a leaking injector. As this failure can bring about more significant engine trouble on your car, we chose to produce this content page to help you confirm the failure of a leaking injector and treat it correctly. To accomplish this, we will initially look into the case of gasoline injectors and then at those of diesel injectors Lexus RX.
Leaking injector on my petrol Lexus RX
It is essential to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two sort 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 Lexus RX: The different leaks
It should be known that injector leaks on a Lexus RX equipped with a petrol engine are pretty rare. This is caused by 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 possible that you have a leak from the top of the injector, this is the portion that is attached 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 portion 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 Lexus RX
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system produces 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 RX: The different leaks
In the case of leaking diesel injectors on your Lexus RX, 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, commonly the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Lexus RX will be brought on by an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most troublesome, 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 examining you have oil leaking but it does not come from your injectors, we encourage you to browse this content page on the presence of oil leaking on your Lexus RX.
Leaking injector on my Lexus RX, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is connected, as we have seen sooner, to a worn seal due to 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…
- 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 very often be limited to changing the seals that have failed:
- Situate the source of the leak
- Dismantle 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 situations, these interventions are not inevitably difficult, but if you have the smallest hesitation in the treatment of your injector that leaks on your Lexus RX, we encourage you to get closer to your motor mechanic to avoid any bad manipulation that could significantly harm the condition of your Lexus RX.
If you have any further questions about the Lexus RX, do not hesitate to consult our Lexus RX category.
