In the event that you are informed of unusual symptoms on your automobile, you are right to be intrigued, because a car represents a massive annual budget and surprising breakdowns don’t reduce the expenses. So what if you feel as if you have a leaking injector on your Renault Master? You probably figured it out thanks to black/oily drips along your engine, or a troubled idle, or unconventional black smoke. These three symptoms are the main indicators of a leaking injector. As this troubles can produce more severe engine problems on your car, we decided to write this article content to help you validate the failure of a leaking injector and deal with it properly. To do so, we will first look at the case of gasoline injectors and then at those of diesel injectors Renault Master.
Leaking injector on my petrol Renault Master
It is crucial to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two kind of engines makes the injection distinct. The key 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 Master: The different leaks
It should be said that injector leaks on a Renault Master equipped with a petrol engine are pretty infrequent. This is because of 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 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 experience a leak coming from the lower part 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 Master
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure produces 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 Master: The different leaks
In the case of leaking diesel injectors on your Renault Master, there are three several kind of leaks:
- Leakage from the injector inlet:
In this instance, it is an inlet pipe that will deform with time, usually 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 Renault Master will be caused by 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 find an air noise and a compression loss. - If after examining you have oil leaking but it does not come from your injectors, we suggest you to read this article content on the existence of oil leaking on your Renault Master.
Leaking injector on my Renault Master, how to fix the leak
And finally, we’re going to look at how to fix a leaking injector on your car. Oftentimes a leak is associated, as we have seen previously, to a worn seal because of the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is conducted…
- Masking 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 frequently be restricted to swapping the seals that have failed:
- Discover the source of the leak
- Dismantle the injector in question
- Change the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in accordance 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 Master, we suggest you to get closer to your auto technician to avoid any bad handling that could seriously harm the condition of your Renault Master.
If you need more tutorials on the Renault Master, go to our Renault Master category.
