Whenever you are aware of irregular symptoms on your automobile, you are right to be worried, because a car represents a big annual budget and unforeseen malfunctions don’t reduce the bill. So what if you feel as if you have a leaking injector on your Cadillac SRX? You almost certainly figured it out thanks to black/oily drips along your engine, or a troubled idle, or unconventional black smoke. These three manifestations are the main indicators of a leaking injector. As this failure can lead to more critical engine complications on your car, we thought we would write this article to help you validate the failure of a leaking injector and handle it correctly. To do this, we will first of all take a look at the case of gasoline injectors and then at those of diesel injectors Cadillac SRX.
Leaking injector on my petrol Cadillac SRX
It is vital to know that the injectors on petrol and diesel engines are distinct, the reality is, the difference in combustion between these two types of engines makes the injection distinct. The main difference lies in the pressure undergone 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 Cadillac SRX: The different leaks
It should be known that injector leaks on a Cadillac SRX equipped with a petrol engine are pretty rare. This is resulting from the much lower pressure in the petrol intake systems. Even so, 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:
Finally, you may encounter a leak coming from the lower part 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 Cadillac SRX
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion system 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 Cadillac SRX: The different leaks
In the case of leaking diesel injectors on your Cadillac SRX, there are three different types of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform over time, generally 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 Cadillac SRX will be caused by 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 checking you have oil leaking but it does not come from your injectors, we advise you to browse this article on the existence of oil leaking on your Cadillac SRX.
Leaking injector on my Cadillac SRX, how to fix the leak
And finally, we’re going to take a look at how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen sooner, to a worn seal caused by the pressures endured. But think that the pressure in the circuit is gigantic, especially on diesel engines. So you will have to take some 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 oftentimes be restricted to changing the seals that have failed:
- Discover 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 situations, these interventions are not specifically complex, but if you have the smallest hesitation in the treatment of your injector that leaks on your Cadillac SRX, we advise you to get closer to your auto mechanic to avoid any bad handling that could seriously harm the condition of your Cadillac SRX.
To get more tips on the Cadillac SRX, take a look at the Cadillac SRX category.
