In the event you are aware of irregular signs on your vehicle, you are right to be preoccupied, because a car represents a big annual budget and unpredicted breakdowns don’t lower the bill. So what if you find that you have a leaking injector on your Toyota Tacoma? You probably figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unusual black smoke. These three signs of illness are the main signs of a leaking injector. As this troubles can lead to more critical engine problems on your car, we chose to compose this content page to help you ensure the failure of a leaking injector and treat it properly. To do this, we will initially check out the case of gasoline injectors and then at those of diesel injectors Toyota Tacoma.

leaking-injector-toyota-tacoma

Leaking injector on my petrol Toyota Tacoma

It is important to know that the injectors on petrol and diesel engines are different, actually, the difference in combustion between these two types 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 Toyota Tacoma: The different leaks

It should be noted that injector leaks on a Toyota Tacoma equipped with a petrol engine are rather rare. This is as a result of the much lower pressure in the petrol intake systems. Nevertheless, there are two types 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 attached 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 portion of the injector of your car, this one will come from the junction with the engine and not with the rail as seen before.

Leaking injector on my diesel Toyota Tacoma

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 Toyota Tacoma: The different leaks

In the case of leaking diesel injectors on your Toyota Tacoma, there are three different types of leaks:

  • Leakage from the injector inlet:
    In cases like this, it is an inlet pipe that will deform after a while, commonly 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 Toyota Tacoma will be caused by 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 feel 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 content page on the existence of oil leaking on your Toyota Tacoma.

Leaking injector on my Toyota Tacoma, how to fix the leak

And at last, we’re going to check out how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen previously, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some safety measures:

  • Lower the pressure before any work is achieved…
  • 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 regularly be limited to changing the seals that have failed:

  • Identify 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 respect with the manufacturer’s standards.

In all situations, these interventions are not automatically complex, but if you have the slightest uncertainty in the treatment of your injector that leaks on your Toyota Tacoma, we suggest you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Toyota Tacoma.

If you need more tutorials on the Toyota Tacoma, go to our Toyota Tacoma category.