Having a issue with your car is traditional, because unfortunately recent vehicles are more and more difficult and therefore at the mercy of more and more possible breakdowns. Today we’re going to try to help you to solve an injection problem on your Infiniti QX70 . This is a issue that is specially bothersome because it can eventually bring your vehicle to non starting or broken engine unit. To do this, first we will find out how injection works, then, what are the different problems that can exist on a Infiniti QX70 injectors , and finally, how to solve them.
What is the intent of the injection of a Infiniti QX70?
So we start our content by promptly explaining how an injection system works so that you have all the information you need to figure out the failures connected with it. < br>
The injection system of a Infiniti QX70 handles the fuel intake into the engine unit , it replaces the old carburettors. It has the benefit to be much more precise and to come, under pressure, to release the fuel in the engine unit. 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 Infiniti QX70. The benefit 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 problems on Infiniti QX70?
Now in this second part, we are going to explore the different injection problems and their symptoms that you may possibly encounter on your Infiniti QX70 .
Injection pump problems Infiniti QX70
To begin, we will find out the injection pump problems on your Infiniti QX70, there are not many of them, they are quite often chronic but we will outline them down below:
- Electronic issue of the high pressure pump: If you have an electronic issue, the pressure in your injection system may be too high or too low which will trigger a bad air/fuel mixture and therefore a bad combustion and thus alter the behavior of the engine unit of your Infiniti QX70.
- Leakage from the injection pump of your Infiniti QX70: If you have a significant 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 results and symptoms of a fuel pump issue on a Infiniti QX70 , you will certainly feel, a lack of power, your engine unit grazing, dark smoke emissions…
Injectors problems Infiniti QX70
Now we proceed to the injector problems on Infiniti QX70 . Injectors represent the end of your injection system, here are the different problems you may possibly encounter:
- Dirty Infiniti QX70 injectors: This can happen as a result of poor fuel quality, they will let less fuel through or more if they are completely clogged. So you will probably have one or more cylinders that are not functioning properly.
- Leaky Infiniti QX70 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 Infiniti QX70 HS: This is the circumstance when your injectors are completely clogged or when you have an electronic problem, it will not let anything go.
Concerning the symptoms of injector problems on your Infiniti QX70 it is about the same as for a faulty injection pump. You may possibly encounter problems with starting, throttle response, power loss, and smoke emission.
How to get rid of an injection issue on a Infiniti QX70?
To end our content on the injection problems on Infiniti QX70 , we will try to give you the solutions that exist to solve these problems.
If after a precise investigation it’s your injection pump that is the main cause of your problems, it will unfortunately be very complicated to intervene on the issue without changing the part, 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 several diagnostics and estimates before starting any repair.
Regarding a issue with an injector there are different solutions depending on your concerns, here they are:
- Dirty injector: You can clean the injectors of your Infiniti QX70, do not hesitate to consult our content on this subject to get the procedure. If it doesn’t work, you will have to replace 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 hesitate to consult our content on the injectors that leak on Infiniti QX70, to have all the solutions available to you.
- Injector HS: Finally, last solution, your injector is damaged or doesn’t work anymore, in general, the replacement of an injector costs around 500 euros labor included.
If you wish more tutorials on the Infiniti QX70, go to our Infiniti QX70 category.
