In the event you are informed of unusual signs on your automobile, you are right to be concerned, because a car represents a huge annual budget and sudden malfunctions don’t reduce the bill. So what if you think that you have a leaking injector on your Buick Enclave? You probably figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or uncommon black smoke. These three symptoms are the main indicators of a leaking injector. As this problem can bring on more severe engine problems on your car, we thought we would publish this article content to help you ensure the failure of a leaking injector and deal with it properly. To do this, we will first look into the case of gasoline injectors and then at those of diesel injectors Buick Enclave.
Leaking injector on my petrol Buick Enclave
It is crucial to know that the injectors on petrol and diesel engines are different, in reality, the difference in combustion between these two kind of engines makes the injection different. 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 Buick Enclave: The different leaks
It should be noted that injector leaks on a Buick Enclave equipped with a petrol engine are pretty rare. This is as a result of 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 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:
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 before.
Leaking injector on my diesel Buick Enclave
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system creates 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 Buick Enclave: The different leaks
In the case of leaking diesel injectors on your Buick Enclave, there are three several kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform with time, usually the leak will be at the clamping point. - Injector return leakage:
As its name suggests, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Buick Enclave 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 bothersome, 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 examining you have oil leaking but it does not come from your injectors, we recommend you to read this article content on the existence of oil leaking on your Buick Enclave.
Leaking injector on my Buick Enclave, how to fix the leak
And to finish, we’re going to look into how to fix a leaking injector on your car. Frequently a leak is connected, as we have seen previously, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some safety measures:
- Lower the pressure before any work is carried out…
- 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 regularly be restricted 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 cases, these interventions are not necessarily difficult, but if you have the slightest hesitation in the treatment of your injector that leaks on your Buick Enclave, we recommend you to get closer to your motor mechanic to avoid any bad manipulation that could seriously harm the condition of your Buick Enclave.
To discover more tips on the Buick Enclave, take a look at the Buick Enclave category.
