In cases where you are alert of unusual signs on your automobile, you are right to be concerned, because a car represents a huge annual budget and surprising malfunctions don’t reduce the expenses. So what if you sense that you have a leaking injector on your Renault Twingo? You likely figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or strange black smoke. These three manifestations are the main signs of a leaking injector. As this failure can lead to more critical engine concerns on your car, we thought we would publish this article to help you confirm the failure of a leaking injector and handle it properly. To achieve this, we will initially check out the circumstance of gasoline injectors and then at those of diesel injectors Renault Twingo.

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Leaking injector on my petrol Renault Twingo

It is essential 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 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 Twingo: The different leaks

It should be mentioned that injector leaks on a Renault Twingo equipped with a petrol engine are rather infrequent. This is as a result 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 possible 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:
    Finally, you may encounter a leak coming from the lower portion of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen before.

Leaking injector on my diesel Renault Twingo

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Twingo: The different leaks

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

  • Leakage from the injector inlet:
    In this case, it is an inlet pipe that will deform over time, generally 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 Twingo 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 experience an air noise and a compression loss.
  • If after examining you have oil leaking but it does not come from your injectors, we recommend you to read this article on the presence of oil leaking on your Renault Twingo.

Leaking injector on my Renault Twingo, 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 sooner, to a worn seal due to the pressures endured. But think that the pressure in the circuit is monumental, specifically on diesel engines. So you will have to take some safety measures:

  • Lower the pressure before any work is carried out…
  • Masking you to avoid the risk of fuel spillage
  • NEVER work on a running diesel engine injector.

Relating to the repair part of your leak, it will very often be limited to replacing the seals that have failed:

  • Find out 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 situations, these interventions are not specifically very hard, but if you have the smallest uncertainty in the treatment of your injector that leaks on your Renault Twingo, we recommend you to get closer to your auto technician to avoid any bad handling that could seriously harm the condition of your Renault Twingo.

To find more tips on the Renault Twingo, take a look at the Renault Twingo category.