In the event you are informed of unusual symptoms on your car, you are right to be concerned, because a car represents a huge annual budget and unforeseen breakdowns don’t reduce the costs. So what if you think that you have a leaking injector on your Ds Ds 5? You likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or strange black smoke. These three symptoms are the main indicators of a leaking injector. As this problem can cause more critical engine concerns on your car, we made a decision to compose this article to help you validate the failure of a leaking injector and deal with it properly. To do so, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Ds Ds 5.
Leaking injector on my petrol Ds Ds 5
It is fundamental to know that the injectors on petrol and diesel engines are distinct, in reality, the difference in combustion between these two kind of engines makes the injection distinct. The biggest 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 Ds Ds 5: The different leaks
It should be said that injector leaks on a Ds Ds 5 equipped with a petrol engine are pretty 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 plausible that you have a leak from the top of the injector, this is the component that is attached to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may experience 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 sooner.
Leaking injector on my diesel Ds Ds 5
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 Ds Ds 5: The different leaks
In the circumstance of leaking diesel injectors on your Ds Ds 5, there are three different kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform with time, commonly the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Ds Ds 5 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 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 verifying you have oil leaking but it does not come from your injectors, we advise you to consult this article on the presence of oil leaking on your Ds Ds 5.
Leaking injector on my Ds Ds 5, how to fix the leak
And to finish, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is associated, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is achieved…
- 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 very often be restricted to replacing 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 automatically complex, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Ds Ds 5, we advise you to get closer to your mechanic to avoid any bad handling that could severely harm the condition of your Ds Ds 5.
If you need more tutorials on the Ds Ds 5, go to our Ds Ds 5 category.
