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Steadrex Fuel Injector Tester & Cleaner Kit — 8 Pulse Modes, Dual Channel, Tests 2 Injectors Simultaneously

Steadrex Fuel Injector Tester & Cleaner Kit — 8 Pulse Modes, Dual Channel, Tests 2 Injectors Simultaneously

 4.9/5 (2,900+ Reviews)
Regular price $49.99
Regular price $49.99 Sale price $65.99
-30% Sold out
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100+ orders placed in the past 24 hours
Popular with customers across the US
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Diagnose bad injectors in 2 minutes

Save $200 on shop diagnostics

8 pulse modes, tests 2 injectors

Includes case, adapters, and gloves

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Rough Idle? Weak Acceleration? Find Out Why


One tool tests and cleans your injectors in minutes

Darren Mitchell
Darren Mitchell
★★★★★
“Confirmed the problem before buying new injectors”
DIY Mechanic United States

My truck had a rough idle and I did not want to replace injectors blindly. After removing them, this tester made it easy to compare the spray pattern and identify the weak one. It saved me from ordering a complete set I did not need.

Avoided Guesswork Saved Repair Costs
Marcus Reed
Marcus Reed
★★★★★
“Much simpler once you understand the setup”
Home Garage User United States

I connected it to a 12V battery, attached the injector and used an aerosol cleaner with the included adapter. The pulse modes let me open the injector while cleaner passed through it. After a few cycles, the spray looked far more even.

Straightforward Setup Visible Spray Test
Caleb Foster
Caleb Foster
★★★★★
“A useful tool for motorcycle maintenance”
Motorcycle Owner United Kingdom

I bought it for the injectors on two older motorcycles. Being able to pulse and inspect each injector on the bench was far more useful than guessing from how the engine sounded. The compact case also keeps all the leads and adapters together.

Motorcycle Friendly Compact Storage
Trevor Hayes
Trevor Hayes
★★★★★
“The dual leads make comparison much easier”
Engine Rebuild Project Australia

I used it while rebuilding an older engine and tested the injectors one by one before reinstalling them. The controls are basic, the clamps feel solid and the different pulse options help check how each injector responds. Cleaner spray is required separately.

Injector Comparison Solid Connections

Recognize These Warning Signs?

Rough idling, weak power, or hard starts often mean a failing injector — find out for sure in minutes.

  • “Must have injector removed from vehicle. I see it impossible to do 2 at 1 time.”

    Very useful on checking spray from your fuel injectors. Been having an issue with my 99 Tacoma injectors and a place I have purchased their so called "rebuilt" injectors. With this you know exactly what yours is doing. The pulse modes are very useful. Shutting it down and restarting like it would if it was in your vehicle. Keeping the clearer pressure to your injector was the biggest problem with it. Its all in how you set it up. Well worth my investment.

    — Daniel K.📍 Chicago, Illinois

  • “Functions properly, Perfect for DIY Mechanic”

    I haven’t had a chance to use it yet but. I did hook one up and it did function well. I like the size and the case it comes with to keep everything together. so from first glance and just making sure it worked im happy with it for the price. easy to use and DIY friendly. its nice to not have to spend a ton of money on this type of stuff you may use only a couple times a year.

    — James T.📍 Phoenix, Arizona

  • Great little kit

    I use this for motorcycles that I work on. Works great for that. It's small and has I nice carrying case so doesn't take up too much room in your tool cabinet. Instructions are clear and easy to understand. I've dropped it a few times and seems very durable. Great value for the money.

    — Brian S.📍 Miami, Florida

1 of 3

Built for Real Diagnostics, Not Guesswork

Dual-channel testing with pure copper clamps for a stable, accurate read every time.

Real Customer Reviews

4.8 out of 5 | 2,900+ customer reviews

Used by DIY mechanics, motorcycle owners and home garages

Ethan Holloway
Ethan Holloway — Phoenix, United States
★★★★★ “Found the weak injector before replacing the full set”
Verified Buyer Reviewed on June 26, 2026

My pickup had a rough idle and I did not want to keep buying parts based on guesses. I removed the injectors, pulsed them one at a time and quickly saw that one had a much weaker spray pattern. It saved me from replacing injectors that were still working.

Avoided Guesswork Saved Money
Gavin Mercer
Gavin Mercer — Leeds, United Kingdom
★★★★★ “The spray pattern tells you exactly what is happening”
Verified Buyer Reviewed on June 18, 2026

The best part is being able to see the injector working on the bench. One was producing a clean mist while another was dribbling. After cleaning and pulsing it several times, the difference was obvious. Much more useful than diagnosing only from engine symptoms.

Visible Results Bench Testing
Nolan Briggs
Nolan Briggs — Tampa, United States
★★★★★ “Simple setup once everything is on the workbench”
Verified Buyer Reviewed on June 10, 2026

I connected the tester to a 12V battery, attached the injector and used a separate aerosol cleaner with the adapter. The buttons are straightforward and the pulse modes let you check short, long and continuous operation. It worked exactly as I expected.

Easy Setup 8 Pulse Modes
Miles Donnelly
Miles Donnelly — Glasgow, United Kingdom
★★★★★ “Excellent for older motorcycle injectors”
Verified Buyer Reviewed on June 2, 2026

I bought this for two motorcycles that had been sitting for a long time. It helped me check that each injector opened correctly before putting everything back together. The case is compact and keeps the leads, adapters and small seals from getting lost.

Motorcycle Repair Organised Case
Wesley Grant
Wesley Grant — Dallas, United States
★★★★★ “Useful during an engine rebuild”
Verified Buyer Reviewed on May 25, 2026

While rebuilding an older engine, I wanted to inspect the injectors before reinstalling them. This tester let me compare their response and spray pattern without sending them away first. Two cleaned up well and one clearly needed replacing.

Engine Rebuild Injector Comparison
Callum Price
Callum Price — Bristol, United Kingdom
★★★★★ “The dual leads make testing quicker”
Verified Buyer Reviewed on May 16, 2026

I like having two output channels because I can prepare two injectors without constantly changing every connection. The clamps grip the battery terminals securely and the leads are long enough for a normal home-garage setup.

Dual Channel Secure Clamps
Bryce Sutton
Bryce Sutton — Columbus, United States
★★★★★ “Helped confirm the cause of a difficult start”
Verified Buyer Reviewed on May 8, 2026

My car was taking several attempts to start when cold. I tested the injectors and found one was sticking instead of opening consistently. After cleaning it, the injector responded much better. This gave me a clear direction instead of replacing random sensors.

Hard Starting Clear Diagnosis
Rhys Calder
Rhys Calder — Cardiff, United Kingdom
★★★★★ “A proper tool, not another unnecessary gadget”
Verified Buyer Reviewed on April 29, 2026

I only need something like this a few times a year, but when you need it, it is extremely useful. The display is easy to read, the controls are basic and the tester feels sturdy enough to stay in my toolbox between jobs.

Toolbox Essential Sturdy Design
Jonah Kimball
Jonah Kimball — Portland, United States
★★★★★ “Saved a trip to the repair shop”
Verified Buyer Reviewed on April 20, 2026

I was already doing the work at home, so being able to test and clean the injectors myself made sense. It showed me which one was not spraying correctly, and I solved the issue without paying for another diagnostic appointment.

Home Garage Lower Repair Cost
Declan Rowe
Declan Rowe — Sheffield, United Kingdom
★★★★★ “Everything stays together and ready for the next job”
Verified Buyer Reviewed on April 12, 2026

The tester itself is easy to operate and the included adapters cover the injectors I have tried so far. I also appreciate the case because small O-rings and cleaning adapters are exactly the sort of parts that normally disappear in a workshop drawer.

Multiple Adapters Easy Storage

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Enjoy a 30-day worry-free trial. If you’re not fully satisfied, just reach out to our support team and we’ll assist you with a smooth return or full refund — no hassle.

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