In the event you are aware of unusual signs on your automobile, you are right to be worried, because a car represents a huge annual budget and unexpected breakdowns don’t reduce the expenses. So what if you feel as if you have a leaking injector on your Chevrolet Captiva? You almost certainly figured it out thanks to black/oily drips along your engine, or a troubled idle, or uncommon black smoke. These three manifestations are the main signs of a leaking injector. As this problem can lead to more critical engine trouble on your car, we made a decision to publish this content page to help you ensure the failure of a leaking injector and deal with it correctly. To do this, we will first look into the case of gasoline injectors and then at those of diesel injectors Chevrolet Captiva.
Leaking injector on my petrol Chevrolet Captiva
It is important to know that the injectors on petrol and diesel engines are different, the reality is, the difference in combustion between these two sort of engines makes the injection different. The essential 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 Chevrolet Captiva: The different leaks
It should be noted that injector leaks on a Chevrolet Captiva equipped with a petrol engine are rather rare. This is caused by the much lower pressure in the petrol intake systems. Even so, there are two sort 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 component that is attached to the fuel rail, an O-ring will be involved in this. - Leak injector of the lower part:
At last, you may encounter 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 before.
Leaking injector on my diesel Chevrolet Captiva
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 Chevrolet Captiva: The different leaks
In the case of leaking diesel injectors on your Chevrolet Captiva, there are three several sort of leaks:
- Leakage from the injector inlet:
In this case, it is an inlet pipe that will deform in the long run, commonly 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 Captiva will be the result 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 experience 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 presence of oil leaking on your Chevrolet Captiva.
Leaking injector on my Chevrolet Captiva, how to fix the leak
And finally, we’re going to look into how to fix a leaking injector on your car. Regularly a leak is connected, as we have seen prior to this, to a worn seal due to the pressures suffered. But think that the pressure in the circuit is enormous, specifically on diesel engines. So you will have to take some measures:
- Lower the pressure before any work is conducted…
- Masking 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:
- Situate the source of the leak
- Dismantle the injector in question
- Change the corresponding seal kit
- Reassemble the assembly and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all cases, these interventions are not automatically difficult, but if you have the slightest doubt in the treatment of your injector that leaks on your Chevrolet Captiva, we encourage you to get closer to your repair shop to avoid any bad handling that could severely harm the condition of your Chevrolet Captiva.
To discover more tips on the Chevrolet Captiva, take a look at the Chevrolet Captiva category.
