How To Clean Injector Pump Of a Truck Easily

Do you know how to clean injector pump of a truck? The injection pump does the role of generating pressure to move fuel from the tank to the engine. Sometimes it gets clogged. This guide will help you in such a case.

How To Clean Injector Pump Of a Truck

Below is a comprehensive step by step guide on how to clean injector pump of a truck.

Using Fuel Cleaner

Fuel cleaners remove clogs in modern trucks that have a fuel pump in the tank. Here is how to clean it.

Follow the Instructions on the Bottle

Although most fuel cleaners have the same working principle, they differ from brand to brand. It is, therefore, necessary to read the instructions on the fuel cleaner you have bought, which will aid you in following the proper steps. 

Run the Engine

The aim of doing this is to use all fuel in the tank. Several fuel cleaners work better when there is no fuel in the tank. It is necessary to let your engine run until the fuel gauge reads ‘E.’

Pour the Fuel Cleaner into the Fuel Tank

Open the bottle containing fuel cleaner, break the plastic seal under the lid, and then direct it into the gas filler neck the way you do with the fuel pump. The instruction you have read will let you know how many bottles you need to add.

Fill Your Tank With gas

You will need to pump new gas into your tank to mix with the fuel cleaner in the pump. Doing this will help the pump to start picking up the fuel with the cleaner.

Start Your Engine

When you start your engine, the fuel cleaner will flow into the injection pump and the filer as it goes to the engine. As it flows, it will break down the deposits clogging the system. It is necessary to let your engine idle during this process.

Disconnect the Negative Battery Terminal

It is worth noting that old trucks have a mechanical fuel pump within the engine. Batteries have both positive and negative terminals. Locate the negative terminal and disconnect it by sliding the cable off.

Locate the Fuel Pump

Most mechanical fuel pumps are in the engine because they get power from the crankshaft to function. Fuel pumps vary in size and appearance. You have to check your service manual to identify yours.

Disconnect Fuel Lines

Before doing this, put a container beneath your truck to trap fuel that might leak. The fuel pump has two main lines, the inlet, and the outlet. To remove them, you must unscrew the lines or loosen the hose clamps that hold them. 

Remove the Central Screw Holding the Fuel Pump Housing

The mechanical fuel pump is held with a nut or bolt. Locate this nut and use the correct size wrench to remove the nut. After unscrewing the central screw, you can remove the fuel pump.

Use a Brush to Clean the Filter

Inside the fuel pump, there is a filter looking like a screen. Clean it using a brush without removing it. To remove all the dirt, dip the brush in gasoline.


Now that you know how to clean injector pump of your truck, there is no reason this should be an issue in the vehicle. After cleaning the fuel pump, consider putting the cover back and securing it using the central screw. Connect the hose clamps you had previously removed.

Troubleshooting Faulty Injector of Diesel Truck

Diesel injectors are essential for the normal running of the diesel engine. The injectors’ role is to supply fuel into the combustion chamber. The injectors might go bad and fail to function effectively. If such happens, you need to identify and fix the issue as soon as possible. It is necessary to avoid overlooking any symptom that your diesel engine fuel injectors are becoming faulty. This guide shall elaborate on some signs of a faulty injector of diesel truck which you must know as an owner of a diesel-powered truck. 

It is the role of the injectors to ensure that the combustion chamber receives the right amount of fuel at the right time to keep burning. The injector has a body and nozzle, enabling it to work effectively. 

Sometimes the injectors might develop cracks or start to wear out. How will you know that your fuel injector is wearing out?

Symptoms of a Faulty Injector of Diesel Truck

Having a short lifespan is common for diesel fuel injectors. A diesel injector is expected to serve you for at least or not more than 150,000 kilometers. If you use them more than this, they will start to wear out and become ineffective. Here are some signs of a faulty diesel injector.

When Your Engine Sputters as You Accelerate

You will likely notice a faulty injector when you press the accelerator pedal. Your diesel pump will not be able to put up with the fuel pressure from the tank when you accelerate, which results in spattering. If this happens, consider taking your truck for a mechanical check-up.

The appearance of the Engine Check Light

Modern truck engines have sensors that sense issues with any engine part and send it to the dashboard. If your diesel fuel pumps are faulty, the engine check light will likely appear on your dashboard because it will likely cause other engine problems. If the engine check light appears, take your truck for a computer scan to read the error code. Doing this will help in further troubleshooting. 

The computer will interpret the error code, and if it reveals that the code results from engine misfiring, consider checking the condition of your glow plugs before checking the fuel injectors. 

Low Fuel Economy

When your diesel injector becomes faulty, your truck will consume more fuel. High fuel consumption affects the performance of your truck, and its efficiency will reduce. And if you delay repairing your truck, this can lead to severe damage.

Diesel Smell

When there is a problem with the fuel injectors, your truck will smell like diesel. In such a situation, your diesel injectors are badly damaged, and diesel leaks into your engine. A faulty injector will let diesel flow when it is not required, exposing too much fuel in the engine. In such a case, you will feel the smell of diesel in your cabin when driving. 


Leakages or dirty injectors are common problems with diesel injectors. Such problems lead to the signs mentioned above. To keep your truck in good shape, ensure your injector is always clean.

Considerations Before Replacing An Injector Pump

Fuel and air (oxygen) are the primary components that initiate energy production in the engine. The fuel is introduced into the combustion chamber by the fuel injectors. An injector is a mechanical component of an engine that does the role of introducing fuel into the combustion chamber. For effective combustion, fuel and air must mix in a certain ratio. The injector provides the right quantity and ensures a continuous fuel supply to the combustion chamber. The fuel injector’s role exposes it to stress, making it wear out with time. Apart from stress, sometimes it might get clogged and become ineffective. You will have to replace your fuel injector in any of these circumstances. Here is a guide on how to go about replacing an injector pump.

What to Know Before Replacing An Injector Pump

Replacing your fuel injector is one service your truck will require. It would help if you had a few tips before you start to perform this procedure. 

Sings That Your Truck Needs a New Fuel Injector

The first consideration is some of the signs your truck will show when the fuel injector becomes faulty. You will experience some of the below signs when your injector starts to be faulty.

  • The engine starts to become less powerful.
  • Your engine will start to misfire.
  • Increase in fuel consumption
  • Engine knocks

These are some of the common signs that your injector is faulty. Some of these signs are universal to other engine problems. You must visit your mechanic when you experience any of these symptoms.  

The Type of Fuel Injector Your Truck Uses

Did you know that fuel injectors differ depending on your truck’s model? Injectors have different minimum and maximum pulse widths, spray volume, and fuel pressure. 

Every engine will need a minimum fuel volume at a maximum rpm and the capability of providing maximum fuel volume at a minimum rpm for the engine to run normally. The balancing in the engine can be hectic and may demand changing the fuel pressure with the increase in the rpm for the engine to accommodate the additional load. 

Selecting a fuel injector in terms of design is not a hectic process. Getting the right injector in terms of complete combustion in the cylinders requires you to be keen on details. On the market, different fuel injectors are complex. Before buying an injector, you should know your engine configuration or consult your mechanic. 


Whenever you suspect your fuel injector is faulty, you must replace it. Before doing this, you must know how much it will cost you. A new fuel injector varies but will cost you hundreds of dollars and sometimes up to over a thousand dollars for vehicles that require high fuel delivery. 

To cut costs, consider making price comparisons from various suppliers. Visit various shops and check online suppliers. Doing this will enable you to buy from a cheaper dealer.


Replacing a fuel injector is an inevitable process you must perform at some point. When planning to replace your fuel injector, consider the above factors, which will help you get the best fuel injector for your truck.