Whenever you are aware of abnormal symptoms on your vehicle, you are right to be intrigued, because a car represents a huge annual budget and unexpected breakdowns don’t reduce the bill. So what if you feel like you have a leaking injector on your Renault Maxity? 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 indicators of a leaking injector. As this problem can end up in more significant engine complications on your car, we made a decision to write this article to help you ensure the failure of a leaking injector and treat it correctly. To achieve this, we will first check out the case of gasoline injectors and then at those of diesel injectors Renault Maxity.
Leaking injector on my petrol Renault Maxity
It is important to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two sort of engines makes the injection different. 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 Renault Maxity: The different leaks
It should be said that injector leaks on a Renault Maxity equipped with a petrol engine are rather infrequent. This is as a result of 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 part that is linked 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 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 Renault Maxity
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 Renault Maxity: The different leaks
In the case of leaking diesel injectors on your Renault Maxity, there are three several sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform in the long run, commonly the leak will be at the clamping point. - Injector return leakage:
As its name implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Renault Maxity 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 encounter an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we recommend you to browse this article on the presence of oil leaking on your Renault Maxity.
Leaking injector on my Renault Maxity, how to fix the leak
And at last, we’re going to check out how to fix a leaking injector on your car. Very often a leak is linked, as we have seen prior to this, to a worn seal due to the pressures endured. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some 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.
Regarding the repair part of your leak, it will frequently be restricted to replacing the seals that have failed:
- Discover the source of the leak
- Dismantle the injector in question
- Replace 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 necessarily complicated, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Renault Maxity, we recommend you to get closer to your repair shop to avoid any bad handling that could severely harm the condition of your Renault Maxity.
In the event that you have any further questions about the Renault Maxity, do not hesitate to consult our Renault Maxity category.
