Having a problem with your car is common, because regrettably recent vehicles are more and more difficult and therefore exposed to more and more possible breakdowns. Today we’re going to try to help you to resolve an injection problem on your GMC Sierra . This is a problem that is especially bothersome because it can sooner or later bring your vehicle to non starting or damaged engine. To achieve this, first we will find out how injection functions, then, what are the different problems that can exist on a GMC Sierra injectors , and finally, how to resolve them.
What is the goal of the injection of a GMC Sierra?
So we begin our article by quickly detailing how an injection system functions so that you have all the info you need to understand the failures affiliated with it. < br>
The injection system of a GMC Sierra manages the fuel intake into the engine , it replaces the old carburettors. It has the advantage to be a lot more precise and to come, under pressure, to launch the fuel in the engine. The injection pump takes care of pressurizing the fuel and transferring it to the injectors, and the injectors will release the fuel in the form of micro-drops into the cylinders of your GMC Sierra. The advantage of fuel injection is to have a much more precise dosage than a carburettor and to allow a better air/fuel mixture and therefore a better combustion.
What are the different injection complications on GMC Sierra?
Now in this second component, we are going to explore the different injection complications and their manifestations that you may possibly confront on your GMC Sierra .
Injection pump complications GMC Sierra
To start, we will find out the injection pump complications on your GMC Sierra, there are not many of them, they are quite often recurrent but we will detail them below:
- Electronic problem of the high pressure pump: If you have an electronic problem, the pressure in your injection system might be too high or too low which will cause a bad air/fuel mixture and therefore a bad combustion and thus alter the behavior of the engine of your GMC Sierra.
- Leakage from the injection pump of your GMC Sierra: If you have a major leakage problem, the result will be much the same as if you have a lack of pressure, you will not have enough pressure and therefore the combustion of your fuel will not be good
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Regarding the outcomes and manifestations of a fuel pump problem on a GMC Sierra , you will certainly feel, a lack of power, your engine grazing, dark smoke emissions…
Injectors complications GMC Sierra
Now we proceed to the injector problems on GMC Sierra . Injectors are the end of your injection system, here are the different complications you may possibly encounter:
- Dirty GMC Sierra injectors: This can happen because of poor fuel quality, they will let less fuel through or more if they are completely clogged. So you will possibly have one or more cylinders that are not working effectively.
- Leaky GMC Sierra injector: It’s quite often at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
- Injector GMC Sierra HS: This is the case when your injectors are completely clogged or when you have an electronic problem, it will not let anything go.
Concerning the signs of illness of injector complications on your GMC Sierra it is about the same as for a defective injection pump. You may possibly encounter problems with starting, throttle response, power loss, and smoke emission.
How to fix an injection problem on a GMC Sierra?
To end our content page on the injection complications on GMC Sierra , we will try to give you the solutions that exist to resolve these complications.
If after a precise investigation it’s your injection pump that is the reason of your complications, it will regrettably be very complicated to intervene on the issue without changing the component, this change quite often goes with the replacement of the injectors, and sometimes the tank, it will take between 2000 and 3000 euros for the whole, try to get some diagnostics and estimates before starting any repair.
Regarding a problem with an injector there are different solutions depending on your concerns, here they are:
- Dirty injector: You can clean the injectors of your GMC Sierra, do not think twice to seek advice from our article on this subject to get the procedure. If it doesn’t work, you will have to change them.
- Leaky injector: The change and the purchase of a joint kit will only cost you a few tens of euros, but you still need to be able to change it, do not think twice to seek advice from our article on the injectors that leak on GMC Sierra, to have all the solutions available to you.
- Injector HS: Finally, last solution, your injector is broken or doesn’t work anymore, generally, the replacement of an injector costs around 500 euros labor included.
If you need more tutorials on the GMC Sierra, go to our GMC Sierra category.
