If you are aware of unusual symptoms on your automobile, you are right to be worried, because a car represents a massive annual budget and unpredicted malfunctions don’t lower the costs. So what if you feel like you have a leaking injector on your Renault Talisman? You likely figured it out thanks to black/oily drips along your engine motor, or a troubled idle, or strange black smoke. These three symptoms are the main indicators of a leaking injector. As this failure can end up in more serious engine concerns on your car, we thought we would produce this content page to help you verify the failure of a leaking injector and handle it properly. To do so, we will first check out the circumstance of gasoline injectors and then at those of diesel injectors Renault Talisman.

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Leaking injector on my petrol Renault Talisman

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

It should be known that injector leaks on a Renault Talisman equipped with a petrol engine are pretty rare. This is due to 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 part that is connected 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 part of the injector of your car, this one will appear from the junction with the engine and not with the rail as seen previously.

Leaking injector on my diesel Renault Talisman

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

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

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform in the long run, usually the leak will be at the clamping point.
  • Injector return leakage:
    As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Renault Talisman will be a consequence of an O-ring or its plastic tip that leaks.
  • Injector base leak:
    This injection leak is one of the most troublesome, 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 verifying you have oil leaking but it does not come from your injectors, we advise you to browse this content page on the presence of oil leaking on your Renault Talisman.

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

And finally, we’re going to check out how to fix a leaking injector on your car. Oftentimes a leak is connected, as we have seen sooner, to a worn seal due to the pressures endured. But think that the pressure in the circuit is gigantic, specifically on diesel engines. So you will have to take some measures:

  • 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.

Regarding the repair part of your leak, it will frequently be restricted to changing the seals that have failed:

  • Locate the source of the leak
  • Take apart the injector in question
  • Replace 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 automatically very hard, but if you have the smallest doubt in the treatment of your injector that leaks on your Renault Talisman, we advise you to get closer to your auto technician to avoid any bad handling that could significantly harm the condition of your Renault Talisman.

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