If you are alert of irregular symptoms on your car, you are right to be worried, because a car represents a massive annual budget and sudden malfunctions don’t reduce the expenses. So what if you feel like you have a leaking injector on your Chevrolet Suburban? You probably figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or abnormal black smoke. These three manifestations are the main indicators of a leaking injector. As this problem can cause more serious engine complications on your car, we made a decision to produce this article content to help you validate the failure of a leaking injector and treat it correctly. To accomplish this, we will first take a look at the case of gasoline injectors and then at those of diesel injectors Chevrolet Suburban.
Leaking injector on my petrol Chevrolet Suburban
It is important to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two types of engines makes the injection different. The essential 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 Suburban: The different leaks
It should be mentioned that injector leaks on a Chevrolet Suburban equipped with a petrol engine are pretty rare. This is because of the much lower pressure in the petrol intake systems. However, there are two types 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 portion 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 suffer a leak coming from the lower portion of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Chevrolet Suburban
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 Chevrolet Suburban: The different leaks
In the case of leaking diesel injectors on your Chevrolet Suburban, there are three different types of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform as time passes, in most cases 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 Chevrolet Suburban 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 feel an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we encourage you to browse this article content on the presence of oil leaking on your Chevrolet Suburban.
Leaking injector on my Chevrolet Suburban, how to fix the leak
And at last, we’re going to take a look at how to fix a leaking injector on your car. Frequently a leak is linked, as we have seen previously, to a worn seal caused by the pressures suffered. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is done…
- Covering 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 frequently be limited to replacing the seals that have failed:
- Locate the source of the leak
- Dismantle 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 inevitably complicated, but if you have the smallest doubt in the treatment of your injector that leaks on your Chevrolet Suburban, we encourage you to get closer to your auto technician to avoid any bad handling that could critically harm the condition of your Chevrolet Suburban.
In the event that you have any additional questions about the Chevrolet Suburban, do not hesitate to consult our Chevrolet Suburban category.
