In cases where you are aware of abnormal signs on your car, you are right to be concerned, because a car represents a big annual budget and surprising breakdowns don’t lower the expenses. So what if you find that you have a leaking injector on your Cadillac ATS? You almost certainly figured it out thanks to black/oily drips along your engine motor, or a disturbed idle, or unconventional black smoke. These three manifestations are the main symptoms of a leaking injector. As this failure can bring about more critical engine trouble on your car, we chose to publish this content page to help you confirm the failure of a leaking injector and deal with it properly. To achieve this, we will first of all check out the circumstance of gasoline injectors and then at those of diesel injectors Cadillac ATS.
Leaking injector on my petrol Cadillac ATS
It is important to know that the injectors on petrol and diesel engines are distinct, actually, the difference in combustion between these two types of engines makes the injection distinct. 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 Cadillac ATS: The different leaks
It should be noted that injector leaks on a Cadillac ATS equipped with a petrol engine are rather infrequent. This is because 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 plausible 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:
At last, you may experience a leak coming from the lower part of the injector of your car, this one will occur from the junction with the engine and not with the rail as seen sooner.
Leaking injector on my diesel Cadillac ATS
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 Cadillac ATS: The different leaks
In the circumstance of leaking diesel injectors on your Cadillac ATS, 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, generally the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage concerns the management of the fuel return in the injector, this time the injector that leaks on your Cadillac ATS will be brought on 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 find an air noise and a compression loss. - If after checking you have oil leaking but it does not come from your injectors, we encourage you to read this content page on the existence of oil leaking on your Cadillac ATS.
Leaking injector on my Cadillac ATS, 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 as a result of the pressures suffered. But think that the pressure in the circuit is enormous, especially on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is achieved…
- 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:
- Identify the source of the leak
- Take apart the injector in question
- Replace the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in respect with the manufacturer’s standards.
In all cases, these interventions are not necessarily complex, but if you have the tiniest uncertainty in the treatment of your injector that leaks on your Cadillac ATS, we encourage you to get closer to your mechanic to avoid any bad manipulation that could critically harm the condition of your Cadillac ATS.
To discover more tips on the Cadillac ATS, take a look at the Cadillac ATS category.
