Universal Fuel Injector Tester and Cleaner Tool Kit, DIY Cleaning Tool Kit, 8 Pulse Modes, 4 Wire Dual Channel for 2 Fuel Injectors, 8 Size Cleaning Adapters, 12V/5V Output Power

Works well. Trusted 8 modes in all working order. The reset button that comes with this device is handy and the products that come are all included.

I used this to test and clean my fuel injectors as part of an engine rebuild. The product worked well and I recommend it...but I do have some notes: 1) The "cleaning adapters" let you insert a fuel injector, and then place the adapter and injector on a can of carburetor cleaner. I tried 4 different brands of cleaners. Most leaked between the cleaning adapter and the can. One brand (STA-BIL) did not leak: it has a different type of button on the can (a large "comfort" button), with a 4mm stem underneath. The other brands (O'Reilly, et al) have a smaller "standard" button with a 3.25mm stem underneath. These leak. This is despite using the o-rings that come with this tool. In other words, to prevent leaking the stem of the can must be 4mm to achieve a tight fit in the adapter. The provided o-rings do not prevent leaking when using a smaller 3.25mm stem that does not fit snuggly into the adapter. This is an inconvenience, but not an insurmountable problem. 2) When using the STA-BIL carb cleaner that fit tightly into the adapter, it maintained a lot of pressure (a good thing)...but is hard to hold together when the fuel injector is closed. You will probably want to set the tester to a continuous mode, start the testing, and then spray the cleaner. (If you try to start spraying the cleaner first, you will have trouble holding the injector, adapter, and can together while initiating the testing.) 3) The modes are basically: Off; Low Power: single cycle, short burst, long burst, continuous; and High Power: single cycle, short burst, long burst, continuous 4) The tester basically is just turning power on and off rapidly...simulating what the vehicle does. Perhaps "exerciser" is a better word than "tester". 5) The tester does not actually evaluate the fuel injector in any way. 6) The tester takes standard 12 volt DC power. You can connect it to your car battery or use any 12VDC barrel connector power supply that provides at least 2 amps. 7) The high power modes are useful if the fuel injectors are stuck (such as they may be if they have sat for a while with ethanol fuel in them). In this case, the low power modes may not cycle the injectors...but the high power modes may cycle them just fine.

This did what it was intended to do. I was able to clean all of my injectors on my boat motor. But it took a bit of doing. I read some reviews before my purchase and was prepared with things to be aware of. To keep the carburetor cleaner from messing up the plastic box, I put it in a sandwich baggie and tape it up where the wires came out. Still could see the box and able to push the buttons. And no damage to the box. I did have to take a drill bit and manually open up the hole that goes onto the carburetor cleaning can. It is a bit of a challenge holding the injector in the holder while spraying. But doable once i figured it out. I would purchase it again. Well worth the money.

Was worth the money. Test was easy and precise, saved me money to replace it myself.

I have saved so many clogged direct port injectors with this thing. Works great!