In the event you are aware of abnormal symptoms on your vehicle, you are right to be preoccupied, because a car represents a massive annual budget and unpredicted malfunctions don’t lower the expenses. So what if you think that you have a leaking injector on your Citroen Nemo? You most likely figured it out thanks to black/oily drips along your engine, or a troubled idle, or strange black smoke. These three signs of illness are the main signs of a leaking injector. As this problem can end up in more severe engine trouble on your car, we made a decision to write this content to help you ensure the failure of a leaking injector and handle it correctly. To do this, we will initially check out the case of gasoline injectors and then at those of diesel injectors Citroen Nemo.
Leaking injector on my petrol Citroen Nemo
It is crucial to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two kind of engines makes the injection different. 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 Citroen Nemo: The different leaks
It should be noted that injector leaks on a Citroen Nemo equipped with a petrol engine are pretty infrequent. This is caused by 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 possible 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:
At last, 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 before.
Leaking injector on my diesel Citroen Nemo
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Citroen Nemo: The different leaks
In the case of leaking diesel injectors on your Citroen Nemo, there are three different kind of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform with time, generally the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Citroen Nemo will be caused by 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 verifying you have oil leaking but it does not come from your injectors, we recommend you to consult this content on the presence of oil leaking on your Citroen Nemo.
Leaking injector on my Citroen Nemo, how to fix the leak
And to finish, we’re going to check out how to fix a leaking injector on your car. Oftentimes a leak is connected, as we have seen prior to this, to a worn seal due to 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 completed…
- Covering you to avoid the risk of fuel spillage
- NEVER work on a running diesel engine injector.
Regarding the repair part of your leak, it will oftentimes be restricted to changing the seals that have failed:
- Discover 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 accordance with the manufacturer’s standards.
In all cases, these interventions are not automatically complex, but if you have the smallest hesitation in the treatment of your injector that leaks on your Citroen Nemo, we recommend you to get closer to your auto mechanic to avoid any bad manipulation that could critically harm the condition of your Citroen Nemo.
If perhaps you have any additional questions about the Citroen Nemo, do not hesitate to consult our Citroen Nemo category.
