In the event you are aware of irregular symptoms on your automobile, you are right to be concerned, because a car represents a big annual budget and unforeseen malfunctions don’t lower the bill. So what if you find that you have a leaking injector on your Chevrolet Silverado? You probably figured it out thanks to black/oily drips along your engine, or a troubled idle, or strange black smoke. These three symptoms are the main signs of a leaking injector. As this troubles can bring about more severe engine complications on your car, we made a decision to prepare this content to help you validate the failure of a leaking injector and handle it properly. To accomplish this, we will initially look into the circumstance of gasoline injectors and then at those of diesel injectors Chevrolet Silverado.

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Leaking injector on my petrol Chevrolet Silverado

It is fundamental 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 main 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 Chevrolet Silverado: The different leaks

It should be known that injector leaks on a Chevrolet Silverado equipped with a petrol engine are pretty rare. This is due to 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 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 suffer 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 before.

Leaking injector on my diesel Chevrolet Silverado

Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Chevrolet Silverado: The different leaks

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

  • Leakage from the injector inlet:
    In this case, 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 implies, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Chevrolet Silverado will be caused 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 verifying you have oil leaking but it does not come from your injectors, we advise you to consult this content on the existence of oil leaking on your Chevrolet Silverado.

Leaking injector on my Chevrolet Silverado, how to fix the leak

And finally, we’re going to look into how to fix a leaking injector on your car. Frequently 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 gigantic, especially on diesel engines. So you will have to take some precautions:

  • Lower the pressure before any work is completed…
  • Covering 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 oftentimes be limited to swapping the seals that have failed:

  • Locate the source of the leak
  • Take apart 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 cases, these interventions are not inevitably complicated, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Chevrolet Silverado, we advise you to get closer to your repair shop to avoid any bad manipulation that could critically harm the condition of your Chevrolet Silverado.

To find more tips on the Chevrolet Silverado, take a look at the Chevrolet Silverado category.