If you are aware of abnormal symptoms on your automobile, you are right to be concerned, because a car represents a big annual budget and unexpected malfunctions don’t reduce the expenses. So what if you feel like you have a leaking injector on your Toyota Land Cruiser Serie 90? You probably 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 indicators of a leaking injector. As this troubles can bring on more severe engine concerns on your car, we decided to write this article to help you verify the failure of a leaking injector and handle it properly. To accomplish this, we will first check out the case of gasoline injectors and then at those of diesel injectors Toyota Land Cruiser Serie 90.
Leaking injector on my petrol Toyota Land Cruiser Serie 90
It is essential to know that the injectors on petrol and diesel engines are distinct, the truth is, the difference in combustion between these two sort 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 Toyota Land Cruiser Serie 90: The different leaks
It should be noted that injector leaks on a Toyota Land Cruiser Serie 90 equipped with a petrol engine are pretty infrequent. This is due to the much lower pressure in the petrol intake systems. Nevertheless, 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 part that is attached 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 occur from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Toyota Land Cruiser Serie 90
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 Land Cruiser Serie 90: The different leaks
In the case of leaking diesel injectors on your Toyota Land Cruiser Serie 90, there are three several sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform over time, 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 Toyota Land Cruiser Serie 90 will be a consequence of 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 encounter 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 consult this article on the existence of oil leaking on your Toyota Land Cruiser Serie 90.
Leaking injector on my Toyota Land Cruiser Serie 90, how to fix the leak
And finally, we’re going to check out how to fix a leaking injector on your car. Very often a leak is linked, as we have seen sooner, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is achieved…
- 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 regularly be limited to swapping the seals that have failed:
- Identify the source of the leak
- Take apart the injector in question
- Change the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.
In all situations, these interventions are not specifically very hard, but if you have the slightest doubt in the treatment of your injector that leaks on your Toyota Land Cruiser Serie 90, we encourage you to get closer to your repair shop to avoid any bad handling that could significantly harm the condition of your Toyota Land Cruiser Serie 90.
If you wish more tutorials on the Toyota Land Cruiser Serie 90, go to our Toyota Land Cruiser Serie 90 category.
