In the event that you are alert of irregular symptoms on your car, you are right to be concerned, because a car represents a huge annual budget and unpredicted breakdowns don’t reduce the bill. So what if you feel as if you have a leaking injector on your Acura TL? You probably figured it out thanks to black/oily drips along your engine, or a disturbed idle, or uncommon black smoke. These three manifestations are the main signs of a leaking injector. As this troubles can produce more severe engine trouble on your car, we made a decision to prepare this article to help you verify the failure of a leaking injector and deal with it properly. To achieve this, we will first of all take a look at the circumstance of gasoline injectors and then at those of diesel injectors Acura TL.


Leaking injector on my petrol Acura TL

It is vital to know that the injectors on petrol and diesel engines are different, in fact, 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 Acura TL: The different leaks

It should be known that injector leaks on a Acura TL equipped with a petrol engine are rather infrequent. This is as a result of 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 component 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 experience 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 Acura TL

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 Acura TL: The different leaks

In the circumstance of leaking diesel injectors on your Acura TL, 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, in most cases 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 Acura TL 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 encounter an air noise and a compression loss.
  • If after checking you have oil leaking but it does not come from your injectors, we recommend you to browse this article on the presence of oil leaking on your Acura TL.

Leaking injector on my Acura TL, how to fix the leak

And to finish, we’re going to take a look at how to fix a leaking injector on your car. Very often a leak is associated, as we have seen sooner, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some measures:

  • Lower the pressure before any work is carried out…
  • 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:

  • Discover the source of the leak
  • Dismantle 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 cases, these interventions are not automatically difficult, but if you have the slightest doubt in the treatment of your injector that leaks on your Acura TL, we recommend you to get closer to your repair shop to avoid any bad handling that could severely harm the condition of your Acura TL.

If you want more guides on the Acura TL, go to our Acura TL category.