Having a problem with your motor vehicle is common, because sadly recent automobiles are more and more difficult and therefore be subject to more and more possible breakdowns. On this page we’re going to try to help you to fix an injection problem on your Toyota 4Runner . This is a problem that is specially frustrating because it can ultimately bring your car to non starting or broken engine. To do this, first we will find out how injection functions, then, what are the different problems that can exist on a Toyota 4Runner injectors , and finally, how to fix them.

injection-problem-toyota-4runner

What is the goal of the injection of a Toyota 4Runner?

So we start our content page by promptly detailing how an injection system functions so that you have all the info you need to discover the failures affiliated with it. < br>
The injection system of a Toyota 4Runner controls the fuel intake into the engine , it replaces the old carburettors. It has the benefit to be much more precise and to come, under pressure, to discharge the fuel in the engine. The injection pump takes care of pressurizing the fuel and transferring it to the injectors, and the injectors will relieve the fuel in the form of micro-drops into the cylinders of your Toyota 4Runner. The benefit of fuel injection is to have a much more precise dosage than a carburettor and to enable a better air/fuel mixture and therefore a better combustion.

What are the different injection problems on Toyota 4Runner?

Now in this second part, we are going to discover the different injection problems and their signs of illness that you might encounter on your Toyota 4Runner .

Injection pump problems Toyota 4Runner

To begin, we will find out the injection pump problems on your Toyota 4Runner, there are not many of them, they are often chronic 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 bring about a bad air/fuel mixture and therefore a bad combustion and thus alter the performance of the engine of your Toyota 4Runner.
  • Leakage from the injection pump of your Toyota 4Runner: If you have a major leakage problem, the end 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

.
Concerning the consequences and signs of illness of a fuel pump problem on a Toyota 4Runner , you will certainly feel, a lack of power, your engine grazing, dark smoke emissions…

Injectors problems Toyota 4Runner

Now we proceed to the injector problems on Toyota 4Runner . Injectors represent the end of your injection system, here are the different problems you might encounter:

  • Dirty Toyota 4Runner injectors: This can happen because of poor fuel quality, they will let less fuel through or more if they are entirely clogged. So you will probably have one or more cylinders that are not working effectively.
  • Leaky Toyota 4Runner injector: It’s often at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector Toyota 4Runner HS: This is the circumstance when your injectors are entirely clogged or when you have an electronic problem, it will not let anything go.

Concerning the signs of illness of injector problems on your Toyota 4Runner it is about the same as for a faulty injection pump. You might experience problems with starting, throttle response, power loss, and smoke emission.

How to fix an injection problem on a Toyota 4Runner?

To conclude our article on the injection problems on Toyota 4Runner , we will try to give you the solutions that exist to fix these problems.
If after a precise investigation it’s your injection pump that is the reason of your problems, it will sadly be very complicated to intervene on the problem without replacing the part, this change 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.
Concerning a problem with an injector there are different solutions based on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your Toyota 4Runner, do not think twice to seek advice from our content page 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 have the ability to change it, do not hesitate to seek advice from our content page on the injectors that leak on Toyota 4Runner, to have all the solutions available to you.
  • Injector HS: Finally, last remedy, your injector is broken or doesn’t work anymore, generally speaking, the replacement of an injector costs around 500 euros labor included.

If you have any further questions about the Toyota 4Runner, do not hesitate to consult our Toyota 4Runner category.