In the event that you are alert of unusual signs on your car, you are right to be intrigued, because a car represents a massive annual budget and unpredicted breakdowns don’t reduce the expenses. So what if you feel as if you have a leaking injector on your Lexus UX? You probably figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or abnormal black smoke. These three signs of illness are the main signals of a leaking injector. As this problem can end up in more serious engine complications on your car, we made a decision to publish this article content to help you ensure the failure of a leaking injector and treat it correctly. To accomplish this, we will first of all look into the circumstance of gasoline injectors and then at those of diesel injectors Lexus UX.
Leaking injector on my petrol Lexus UX
It is vital to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two kind 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 Lexus UX: The different leaks
It should be said that injector leaks on a Lexus UX equipped with a petrol engine are rather infrequent. This is as a result of the much lower pressure in the petrol intake systems. Nevertheless, 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 portion that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may experience a leak coming from the lower part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Lexus UX
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Lexus UX: The different leaks
In the circumstance of leaking diesel injectors on your Lexus UX, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform after a while, commonly the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Lexus UX 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 annoying, 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 Lexus UX.
Leaking injector on my Lexus UX, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen prior to this, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, especially on diesel engines. So you will have to take some safety 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.
Concerning the repair part of your leak, it will frequently be restricted to replacing the seals that have failed:
- Find out 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 specifically complex, but if you have the tiniest doubt in the treatment of your injector that leaks on your Lexus UX, we advise you to get closer to your mechanic to avoid any bad manipulation that could significantly harm the condition of your Lexus UX.
If you need more guides on the Lexus UX, go to our Lexus UX category.
