In cases where you are informed of abnormal signs on your vehicle, you are right to be intrigued, because a car represents a massive annual budget and unexpected breakdowns don’t reduce the bill. So what if you sense that you have a leaking injector on your Renault Kangoo 2? You most likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or uncommon black smoke. These three manifestations are the main signals of a leaking injector. As this failure can cause more critical engine trouble on your car, we chose to write this content to help you confirm the failure of a leaking injector and treat it correctly. To achieve this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Renault Kangoo 2.
Leaking injector on my petrol Renault Kangoo 2
It is vital to know that the injectors on petrol and diesel engines are distinct, the truth is, the difference in combustion between these two kind of engines makes the injection distinct. The key 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 Renault Kangoo 2: The different leaks
It should be mentioned that injector leaks on a Renault Kangoo 2 equipped with a petrol engine are pretty infrequent. This is resulting from the much lower pressure in the petrol intake systems. Even so, 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 suffer 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 Renault Kangoo 2
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Renault Kangoo 2: The different leaks
In the case of leaking diesel injectors on your Renault Kangoo 2, there are three different kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform over time, usually 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 Renault Kangoo 2 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 find an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we suggest you to browse this content on the existence of oil leaking on your Renault Kangoo 2.
Leaking injector on my Renault Kangoo 2, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen sooner, to a worn seal because of the pressures endured. 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 carried out…
- 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 very often be restricted to swapping the seals that have failed:
- Situate the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all situations, these interventions are not automatically very hard, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Renault Kangoo 2, we suggest you to get closer to your auto technician to avoid any bad handling that could seriously harm the condition of your Renault Kangoo 2.
If perhaps you have any additional questions about the Renault Kangoo 2, do not hesitate to consult our Renault Kangoo 2 category.
