How Often Should I Use Fuel Injector Cleaner? – Ask The Experts

Gear4Wheels may collect a share of sales or other compensation from the links on this page. This comes at no additional cost to you, and all the prices and availability are accurate at the time of publishing.

Every part of your car needs to be maintained. When you maintain your car you prevent it from failing at you when you need it. Are you ready to be a wise vehicle owner? One crucial component that needs to be clean is the fuel injector.

A dirty and clogged fuel injector can cause your engine to malfunction. The repair costs are high and it may not be something you want to stress about.

You can prevent this when you purchase a fuel injector cleaner. It’s easy to use at home.

How often should you use the fuel injector cleaner?

The times to use the fuel injector cleaner depends on the type of transmission you have:

  • check
    Gas-injector cleaners should be used every 1,550 miles 
  • check
    Diesel-injector cleaners should be used in every tank

Why should you use a fuel injector cleaner?

It’s important for you to use a fuel injector cleaner when specified. You receive the following benefits when you maintain the car’s engine with a fuel injector cleaner.

Cleans the engine—the best way to protect your car

During use your engine will collect a variety of pollutants such as:

  • Carbon deposits
  • Varnish
  • Debris 

These items can clog up the injector and are harmful to the engine. This leads to malfunctions in the engine’s performance. It can burn more fuel or emit harmful deposits into the environment.

When you keep the engine clean you extend the lifespan of your car.

Increased horsepower

The clogged fuel injector won't feed the engine as it should which reduces the horsepower. This ultimately affects your car’s speed and ease of driving.

When you clean the fuel injector, you prevent any loss of horsepower which optimizes your car’s driving performance.

It’s safer for the environment

When you use these cleaners your car’s emissions will be according to inspection standards. The emissions are not harmful to the environment which contributes to a cleaner living space for people and animals

It helps your car perform as it should

If your engine is contaminated, it works overtime to receive the air and fuel flow it needs. When your engine is overworking itself it can break easier which leads to costly repairs.

It prevents fuel injector damage

A clogged fuel injector leads to damages and it affects the full functionality of it. Carbon deposits can get cooked onto the hot surface of the injector which can cause fast wear and tear. It can also create excess fuel delivery with every pulse.

Cleaning the fuel injector prevents severe wear and tear. It feeds the engine the accurate amount of gas or diesel to the engine which contributes to an optimum performance.

How to use a fuel injector cleaner

Each brand of fuel injector cleaner has its own instructions on how to use it. Normally you can only use it if your fuel tank has enough gas or diesel to let the cleaner pass through. If it doesn’t have the right level then wait until you fill your tank again.

When you have the right amount you only need to add the fuel cleaner to the tank. It’ll clean the injector when you drive.

What removes the deposits from the injector?

The ingredients found in fuel injectors work together to remove any deposits from the injector. They consist of the following:

  • Polyisobutylene: This acts as a detergent to remove sediments in the fuel line. It also prevents knocking and misfiring
  • Polyisobutylene Amine: This helps remove any moisture in the fuel and the system 
  • Polyether Amine: This substance breaks down solidified deposits the polyisobutylene couldn’t remove. Polyether Amine is generally found in high-end fuel injector cleaners 

The dirt is removed because the cleaner breaks up the deposits or other filth that clogs up the fuel system. The cleaner ensures all dirt is burned up with the rest of the fuel. They’re harmless when they burn up but if there is a lot, much smoke is produced.

Signs indicating you should use a fuel injector cleaner

If you experience the following, take it as a sign you need to clean your fuel injector: 

  • Engine stutter, hesitation and stumbling
  • Engine misfire. This is when the car jerks
  • Performance loss
  • Rough idling Engine stalling
  • Uneven fuel burn or increase emissions
  • Increase fuel consumption


Using fuel injector cleaner is best for your car, and also prevents you from being stranded beside the road. Get proactive today and look after your car to the best of your ability.

4.8/5 - (5 votes)

5 thoughts on “How Often Should I Use Fuel Injector Cleaner? – Ask The Experts”

  1. My car keeps cutting out, a mechanic told me it is the injecters, i tried stp diesel injecter cleaner last week it worked. After 5 days (700km) it cut out again, it is ok today, can i put more stp cleaner in again

  2. I didn’t get the answer I was looking for. My question is if it’s safe to use it every time I fuel my truck

    • My 12′ Toyota Camry seems to studder as I accelerate, then it seems like it jerks into gear, very noticeable, my head jerks a bit. Then it’ll shake until I let off of the gas. Could this be fuel injector related, I’ve not used any cleaner in the 3-4 yrs I’ve had the car.

Comments are closed.