If you are alert of abnormal signs on your vehicle, you are right to be preoccupied, because a car represents a huge annual budget and surprising malfunctions don’t reduce the costs. So what if you find that you have a leaking injector on your Renault Espace 3? You most likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or uncommon black smoke. These three signs of illness are the main signs of a leaking injector. As this problem can produce more serious engine complications on your car, we decided to compose this article content to help you verify the failure of a leaking injector and deal with it properly. To accomplish this, we will first look at the case of gasoline injectors and then at those of diesel injectors Renault Espace 3.
Leaking injector on my petrol Renault Espace 3
It is vital to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two kind of engines makes the injection different. The biggest 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 Espace 3: The different leaks
It should be noted that injector leaks on a Renault Espace 3 equipped with a petrol engine are rather rare. 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 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 encounter a leak coming from the lower portion of the injector of your car, this one will come from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Renault Espace 3
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 Espace 3: The different leaks
In the case of leaking diesel injectors on your Renault Espace 3, there are three several kind of leaks:
- Leakage from the injector inlet:
In this case, 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 reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Renault Espace 3 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 annoying, 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 verifying you have oil leaking but it does not come from your injectors, we advise you to read this article content on the presence of oil leaking on your Renault Espace 3.
Leaking injector on my Renault Espace 3, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Very often a leak is connected, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is carried out…
- Covering 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 very often be restricted to swapping the seals that have failed:
- Situate the source of the leak
- Dismantle the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not inevitably difficult, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Renault Espace 3, we advise you to get closer to your repair shop to avoid any bad handling that could significantly harm the condition of your Renault Espace 3.
To find more tips on the Renault Espace 3, take a look at the Renault Espace 3 category.
