Whenever you are informed of abnormal signs on your car, you are right to be concerned, because a car represents a huge annual budget and unforeseen malfunctions don’t reduce the bill. So what if you feel as if you have a leaking injector on your Isuzu D-Max? You most likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or unusual black smoke. These three symptoms are the main indicators of a leaking injector. As this troubles can produce more significant engine trouble on your car, we chose to prepare this content to help you confirm the failure of a leaking injector and deal with it correctly. To do so, we will first of all check out the case of gasoline injectors and then at those of diesel injectors Isuzu D-Max.
Leaking injector on my petrol Isuzu D-Max
It is crucial to know that the injectors on petrol and diesel engines are distinct, in fact, the difference in combustion between these two types of engines makes the injection distinct. The key 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 Isuzu D-Max: The different leaks
It should be said that injector leaks on a Isuzu D-Max equipped with a petrol engine are rather rare. This is as a result of the much lower pressure in the petrol intake systems. Nevertheless, there are two types of leaks:
- Leakage from the top of the injector:
It is plausible 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:
Finally, 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 before.
Leaking injector on my diesel Isuzu D-Max
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Isuzu D-Max: The different leaks
In the case of leaking diesel injectors on your Isuzu D-Max, there are three several types of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform after a while, generally 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 Isuzu D-Max 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 feel an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we encourage you to read this content on the existence of oil leaking on your Isuzu D-Max.
Leaking injector on my Isuzu D-Max, how to fix the leak
And to finish, we’re going to check out how to fix a leaking injector on your car. Very often a leak is associated, as we have seen prior to this, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some safety measures:
- 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.
Relating to the repair part of your leak, it will regularly be restricted to swapping the seals that have failed:
- Situate the source of the leak
- Dismantle the injector in question
- Replace 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 difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Isuzu D-Max, we encourage you to get closer to your auto mechanic to avoid any bad manipulation that could significantly harm the condition of your Isuzu D-Max.
If you need more guides on the Isuzu D-Max, go to our Isuzu D-Max category.
