Whenever you are alert of abnormal signs on your vehicle, you are right to be worried, because a car represents a big annual budget and unpredicted breakdowns don’t lower the costs. So what if you feel like you have a leaking injector on your Chevrolet Colorado? You probably figured it out thanks to black/oily drips along your engine unit, or a disturbed idle, or abnormal black smoke. These three manifestations are the main signals of a leaking injector. As this problem can cause more serious engine concerns on your car, we chose to compose this article to help you verify the failure of a leaking injector and treat it correctly. To achieve this, we will first of all look at the case of gasoline injectors and then at those of diesel injectors Chevrolet Colorado.
Leaking injector on my petrol Chevrolet Colorado
It is fundamental 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 key 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 Colorado: The different leaks
It should be noted that injector leaks on a Chevrolet Colorado equipped with a petrol engine are rather infrequent. This is as a result of the much lower pressure in the petrol intake systems. Nevertheless, there are two sort of leaks:
- Leakage from the top of the injector:
It is conceivable that you have a leak from the top of the injector, this is the component that is linked 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 part of the injector of your car, this one will come from the junction with the engine and not with the rail as seen previously.
Leaking injector on my diesel Chevrolet Colorado
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 Colorado: The different leaks
In the case of leaking diesel injectors on your Chevrolet Colorado, there are three several sort of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform along with time, usually the leak will be at the clamping point. - Injector return leakage:
As its name indicates, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your Chevrolet Colorado 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 verifying you have oil leaking but it does not come from your injectors, we suggest you to browse this article on the existence of oil leaking on your Chevrolet Colorado.
Leaking injector on my Chevrolet Colorado, how to fix the leak
And to finish, we’re going to 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 because of the pressures endured. But think that the pressure in the circuit is monumental, especially on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is conducted…
- Covering 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 limited to changing the seals that have failed:
- Identify 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 respect with the manufacturer’s standards.
In all cases, these interventions are not inevitably very hard, but if you have the tiniest hesitation in the treatment of your injector that leaks on your Chevrolet Colorado, we suggest you to get closer to your auto mechanic to avoid any bad manipulation that could seriously harm the condition of your Chevrolet Colorado.
Whenever you have any further questions about the Chevrolet Colorado, do not hesitate to consult our Chevrolet Colorado category.
