In cases where you are aware of irregular symptoms on your vehicle, you are right to be concerned, because a car represents a huge annual budget and surprising malfunctions don’t reduce the bill. So what if you think that you have a leaking injector on your Renault Kangoo? You probably figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or uncommon black smoke. These three signs of illness are the main signals of a leaking injector. As this troubles can end up in more severe engine trouble on your car, we chose to prepare this article to help you confirm the failure of a leaking injector and treat it properly. To achieve this, we will first of all look into the case of gasoline injectors and then at those of diesel injectors Renault Kangoo.

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Leaking injector on my petrol Renault Kangoo

It is vital to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two kind of engines makes the injection different. 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: The different leaks

It should be mentioned that injector leaks on a Renault Kangoo 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 kind 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 connected 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 come from the junction with the engine and not with the rail as seen sooner.

Leaking injector on my diesel Renault Kangoo

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 Kangoo: The different leaks

In the case of leaking diesel injectors on your Renault Kangoo, there are three several kind of leaks:

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform as time passes, usually the leak will be at the clamping point.
  • Injector return leakage:
    As its name suggests, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Renault Kangoo will be brought on by 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 examining you have oil leaking but it does not come from your injectors, we advise you to read this article on the existence of oil leaking on your Renault Kangoo.

Leaking injector on my Renault Kangoo, how to fix the leak

And finally, we’re going to look into how to fix a leaking injector on your car. Very often a leak is linked, as we have seen sooner, to a worn seal as a result of the pressures suffered. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some precautions:

  • 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 very often 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 respect with the manufacturer’s standards.

In all situations, these interventions are not inevitably very hard, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Renault Kangoo, we advise you to get closer to your auto technician to avoid any bad manipulation that could significantly harm the condition of your Renault Kangoo.

To discover more tips on the Renault Kangoo, take a look at the Renault Kangoo category.