Whenever you are informed of abnormal symptoms on your car, you are right to be concerned, because a car represents a massive annual budget and unforeseen malfunctions don’t lower the costs. So what if you sense that you have a leaking injector on your hyundai i40? You most likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or uncommon black smoke. These three symptoms are the main symptoms of a leaking injector. As this failure can bring about more serious engine trouble on your car, we made a decision to publish this article content to help you confirm the failure of a leaking injector and treat it correctly. To do so, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors hyundai i40.
Leaking injector on my petrol hyundai i40
It is vital to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two kind of engines makes the injection distinct. The biggest 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 hyundai i40: The different leaks
It should be known that injector leaks on a hyundai i40 equipped with a petrol engine are rather rare. This is resulting from 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 plausible that you have a leak from the top of the injector, this is the part 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 encounter a leak coming from the lower portion of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen before.
Leaking injector on my diesel hyundai i40
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 hyundai i40: The different leaks
In the circumstance of leaking diesel injectors on your hyundai i40, there are three several kind of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform over time, generally 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 hyundai i40 will be the result of an O-ring or its plastic tip that leaks. - Injector base leak:
This injection leak is one of the most bothersome, it is the junction between the engine and the injector nose that leaks at a copper seal, you should experience an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we suggest you to read this article content on the existence of oil leaking on your hyundai i40.
Leaking injector on my hyundai i40, 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 because of the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some measures:
- 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 oftentimes be restricted to changing the seals that have failed:
- Find the source of the leak
- Dismantle 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 cases, these interventions are not inevitably complicated, but if you have the tiniest hesitation in the treatment of your injector that leaks on your hyundai i40, we suggest you to get closer to your motor mechanic to avoid any bad handling that could critically harm the condition of your hyundai i40.
To get more tips on the hyundai i40, take a look at the hyundai i40 category.
