You are currently viewing Why The Throttle Body Injectors Not Spraying?

Why The Throttle Body Injectors Not Spraying?

  • Post author:
  • Post category:Cars / Repair

We're an affiliate

We hope you love the products we recommend! Just so you know, we may collect a share of sales or other compensation from the links on this page. Thank you if you use our links, we really appreciate it!

The throttle body injectors in the vehicle are regarded as an essential component. They need proper maintenance and regular servicing; otherwise, specific issues may occur, creating multiple problems. This article will elaborate on the reasons or causes responsible for generating issues like the throttle body injectors not spraying, the fixation costs, and frequently asked questions. So, let’s begin with a brief discussion over the topic.

What Is Throttle Body Injector?

It is a system or part of the vehicle that deals with fuel injection. It is a system in which the injector delivers the fuel to a central location within the engine’s intake manifold. The fuel pressure of the throttle body injection (TBI) create by an electric fuel pump (often mounted and reside in or near the fuel tank), and the pressure is controlled by a regular mounted on the throttle body.

A typical throttle body portion contains the throttle plates, idle air control valve, and throttle position sensor. The fuel body hoses the fuel pressure regulator and done or two fuel injectors.

Why The Throttle Body Injectors Not Spraying?

There could reside a variety of reasons responsible for the improper and faulty throttle body injectors. In such cases, the desired result cannot attain and hence results in deformity in the system giving rise to specific issues in the vehicles.

Also Read:  How To Fix Car Shuts Off When Putting In Drive Or Reverse

Some of the common causes which are primarily involved in such issues are listed below. So, let’s have a brief discussion of the topic to know the actual and logistic reason for the problem.

1. Bad Ignition Module In Car

One of the first and primary symptoms responsible for generating the problem is the wrong or faulty ignition module and engine performance issues. It may result in multiple issues in the vehicle like misfires, hesitation, loss of power, and many more but the central system affected by it is the throttle body injectors. The system fails to spray and is thus unable to perform the function for which it means.

We can quickly determine the bad ignition module due to its multiple signs and symptoms while driving the vehicle. These include acceleration issues, temperature problems and no power. In acceleration issues vehicle may shake, vibrate or jerk thus, giving a clear indication of the problem. On the other hand, a faulty ignition module may result in the car overheating hence initiating temperature problems.

2. No Fuel Pressure

It is also one of the frequent causes resulting in the generation of the issue. The main reasons behind the low or no fuel pressure include a dirty fuel filter, weak pump, incorrect tank venting, restricted fuel lines, a clogged pump, and many other cases. The unresponsive throttle system and the damaged or stuck fuel injector also plays a vital role in low fuel pressure in the vehicle. You may even notice it by misfire codes on specific cylinders at the same time.

Also Read:  Best Dash Cam For Semi Trucks in 2020 | Buyers Guide

In this case, also, we can identify the problem of the initiation of particular signs in the vehicles. These symptoms include: engine misfire or poor acceleration, black smoke coming from the exhaust, spark plug appears black, reduced fuel mileage, gasoline in the vacuum hose, the engine won’t crack, and many more.

3. Clogged Injectors

The clogged fuel injectors may occur due to multiple reasons; however, it’s corrected by unclogging the affected injector rather than replacing the entire filter. Various methods like ultrasonic cleaning can clear them, but you need to do the proper fuel injector cleaners. The main drawback of faulty injectors is that they reduce the fuel flow. However, the common symptoms of a clogged fuel injector are as follows: engine runs very rough, one or multiple cylinders are not firing, the machine does not produce power, harmful emission, and inadequate fuel consumption.

We can quickly fix the issues related to the clogged fuel injectors by unclogging the injector and removing them from the engine. And later send the clogged injectors to the cleaning service centre to attain the desired and best result.

Can You Clean Throttle Body Without Removing It?

It’s the most frequently and commonly asked question, don’t get confused in such situations as there is no need to remove the throttle body for cleaning it. You can easily do it when the body itself is attached to the system.

If you have a DBW throttle body, do not remove it, especially with the key in the ON position. Allow them to depress the gas pedal all the way to open the throttle plate so that you can gain access to do your cleaning.

Also Read:  How To Unhook A Car Battery On My Own?

How Long Does It Take To Replace A Throttle Body?

In most cases, the issues solve by repairing the throttle body, whereas you need to replace the body in others. The throttle body generally replaces with gaskets. And the cost of repairs is directly proportional to the cost of the parts of the vehicle.

Most often, the labour costs are about the same for vehicles. However, some take a couple of hours to complete the job while others required only an hour to handle all the situations. All this depends on the model of the vehicle.

How Much Does It Cost To Replace The Throttle Body?

We recommend you opt for this option only if there is no chance to repair the body. After all, it’s an expensive procedure, and no one wants to apply it unless necessary. The average cost for throttle body replacement lies between $550 to $580. The labour costs in such cases are estimated to range from $90 to $110.

All these ranges do not include taxes and fees, and they may vary depending on the type of vehicle and the location.


We hope the information mentioned above help and guide you in dealing with the situation. Thus, we expect that now you can solve all issues with the throttle body injectors, not spraying on the vehicle.

However, if your doubts or queries regarding the topic persist, comment below in the comment section. And we’ll try to answer all your questions as quickly as possible.