In the event that you are informed of abnormal signs on your automobile, you are right to be concerned, because a car represents a big annual budget and sudden malfunctions don’t reduce the costs. So what if you find that you have a leaking injector on your Ds Ds 4? You almost certainly figured it out thanks to black/oily drips along your engine, or a disturbed idle, or strange black smoke. These three symptoms are the main indicators of a leaking injector. As this problem can lead to more severe engine complications on your car, we thought we would compose this content page to help you confirm the failure of a leaking injector and deal with it properly. To achieve this, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Ds Ds 4.
Leaking injector on my petrol Ds Ds 4
It is crucial to know that the injectors on petrol and diesel engines are distinct, in reality, the difference in combustion between these two sort of engines makes the injection distinct. The essential 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 Ds Ds 4: The different leaks
It should be known that injector leaks on a Ds Ds 4 equipped with a petrol engine are pretty infrequent. 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 conceivable 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:
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 Ds Ds 4
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 Ds Ds 4: The different leaks
In the case of leaking diesel injectors on your Ds Ds 4, there are three different sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform after a while, usually 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 Ds Ds 4 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 experience 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 read this content page on the presence of oil leaking on your Ds Ds 4.
Leaking injector on my Ds Ds 4, how to fix the leak
And to finish, we’re going to take a look at how to fix a leaking injector on your car. Oftentimes a leak is linked, as we have seen previously, to a worn seal caused by 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 conducted…
- 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 oftentimes be restricted to swapping 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 cases, these interventions are not specifically difficult, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Ds Ds 4, we encourage you to get closer to your repair shop to avoid any bad manipulation that could critically harm the condition of your Ds Ds 4.
If perhaps you have any additional questions about the Ds Ds 4, do not hesitate to consult our Ds Ds 4 category.
