Whenever you are informed of abnormal signs on your automobile, you are right to be concerned, because a car represents a huge annual budget and unexpected malfunctions don’t lower the bill. So what if you feel like you have a leaking injector on your GMC Canyon? You most likely figured it out thanks to black/oily drips along your engine unit, or a troubled idle, or abnormal black smoke. These three manifestations are the main indicators of a leaking injector. As this failure can bring on more critical engine concerns on your car, we made a decision to produce this article to help you confirm the failure of a leaking injector and treat it properly. To achieve this, we will first of all look into the circumstance of gasoline injectors and then at those of diesel injectors GMC Canyon.
Leaking injector on my petrol GMC Canyon
It is crucial to know that the injectors on petrol and diesel engines are different, the truth is, the difference in combustion between these two kind of engines makes the injection different. The biggest 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 GMC Canyon: The different leaks
It should be noted that injector leaks on a GMC Canyon equipped with a petrol engine are rather infrequent. This is as a result of the much lower pressure in the petrol intake systems. Even so, there are two kind 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 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 suffer a leak coming from the lower portion 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 GMC Canyon
Unlike petrol engines, which have spark combustion, diesel engines run on compression. This combustion procedure 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 GMC Canyon: The different leaks
In the circumstance of leaking diesel injectors on your GMC Canyon, there are three several kind of leaks:
- Leakage from the injector inlet:
In cases like this, it is an inlet pipe that will deform after a while, in most cases the leak will be at the clamping point. - Injector return leakage:
As its name reveals, this leakage relates to the management of the fuel return in the injector, this time the injector that leaks on your GMC Canyon will be caused by 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 find an air noise and a compression loss. - If after verifying you have oil leaking but it does not come from your injectors, we encourage you to read this article on the presence of oil leaking on your GMC Canyon.
Leaking injector on my GMC Canyon, how to fix the leak
And at last, we’re going to look into how to fix a leaking injector on your car. Very often a leak is connected, as we have seen previously, to a worn seal because of the pressures endured. But think that the pressure in the circuit is tremendous, specifically on diesel engines. So you will have to take some precautions:
- Lower the pressure before any work is carried out…
- 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 oftentimes be limited to swapping the seals that have failed:
- Find out the source of the leak
- Dismantle the injector in question
- Replace the corresponding seal kit
- Reassemble the set up and tighten with a torque wrench in accordance with the manufacturer’s standards.
In all cases, these interventions are not necessarily very hard, but if you have the tiniest hesitation in the treatment of your injector that leaks on your GMC Canyon, we encourage you to get closer to your auto technician to avoid any bad manipulation that could seriously harm the condition of your GMC Canyon.
To get more tips on the GMC Canyon, take a look at the GMC Canyon category.
