If you are alert of unusual signs on your vehicle, you are right to be worried, because a car represents a massive annual budget and unexpected malfunctions don’t reduce the costs. So what if you think that you have a leaking injector on your Renault Trafic 3? You almost certainly figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or unconventional black smoke. These three signs of illness are the main symptoms of a leaking injector. As this failure can bring about more serious engine trouble on your car, we decided to publish this content page to help you ensure the failure of a leaking injector and treat it correctly. To do so, we will first look into the circumstance of gasoline injectors and then at those of diesel injectors Renault Trafic 3.
Leaking injector on my petrol Renault Trafic 3
It is important to know that the injectors on petrol and diesel engines are distinct, in fact, the difference in combustion between these two sort 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 Trafic 3: The different leaks
It should be noted that injector leaks on a Renault Trafic 3 equipped with a petrol engine are pretty 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 possible that you have a leak from the top of the injector, this is the portion that is linked to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
Finally, you may experience 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 previously.
Leaking injector on my diesel Renault Trafic 3
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 Trafic 3: The different leaks
In the circumstance of leaking diesel injectors on your Renault Trafic 3, there are three several sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform after a while, usually 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 Trafic 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 find an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we advise you to browse this content page on the existence of oil leaking on your Renault Trafic 3.
Leaking injector on my Renault Trafic 3, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Very often a leak is connected, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some precautions:
- 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 regularly be restricted to changing the seals that have failed:
- Find out the source of the leak
- Take apart 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 situations, these interventions are not specifically difficult, but if you have the tiniest doubt in the treatment of your injector that leaks on your Renault Trafic 3, we advise you to get closer to your auto technician to avoid any bad manipulation that could significantly harm the condition of your Renault Trafic 3.
If you wish more guides on the Renault Trafic 3, go to our Renault Trafic 3 category.
