Fuel Injector Cleaner Machine Ultrasonic Fuel Injector Cleaning Machine Kit with 9 Test Modes Motorcycle Automotive 4 Cylinder Injector Cleaner and Tester Tool Car Auto Fuel Injector Cleaner Tester

I have flow tested several sets of injectors and this unit really helped figured out which injectors were giving me problems on the race car. The only thing I'd like to see different is actual voltage being applied during the cycles. But that won't lose a star because I knew what I was buying before I got it. This is a good machine for the price.

Used machine to clean injectors on a pickup that’s been sitting a few years. Video shows 2 bad and 2 “good” injectors. The “good” injectors have been back flushed once, but got better after performing a second back flush. Amazon only allows 1 video per review, otherwise I’d include finished pattern. Spray should be nearly a mist, rather than a stream or in my case, 4 streams. I tried a couple different methods including using the ultrasonic cleaning function, but the best results I got was to install the injectors upside down and setting the machine to “Reverse Flushing”. I had to fabricate spacers using valve cover grommets from a Ford 3 valve to get injectors upside down. Doing this a couple times I was able to get all 8 injectors flowing evenly. Also, I had a hard time finding the proper fluid to put in the machine. I recommend kerosene in the tubes for flushing, and 70% rubbing alcohol in the ultrasonic cleaner. The valve on the back drains the ultrasonic tank and the hose on the side measures machine fluid level and is used to drain the internal tank. You can find alternatives that may work better, but alcohol and kerosene are easily obtained and fairly cheap. Plus kerosene will keep for years and ideally won’t ruin the machine if it sits on your shelf for a year before you use it again. Again, it paid for itself the first use. Quality injectors from a local parts house were nearly $100 each.

This machine worked very well to check flow of fuel injector and cleaning of injector in ultrasonic tank

Documentation they send is completely useless. Barely covers the functionality of the machine itself and goes on to talk about other stuff that's not even on there, like the ultrasonic cleaner heater, there isn't one... Filled the machine up with mineral spirits, watching the tube gauge on the side. well it's nowhere close to being accurate as it started overflowing mineral spirits all over my workbench. The gauge tube is just a hose that goes to the bottom of the fluid tank, but it has a big loop at the bottom of the tank, so don't trust it, it's useless. Not to mention that the fuel pump that's inside of the tank, has a big rubber gasket thats only held on by 2 screws, there is no actual seal between the pump and the tank which is where it overflowed and spilled all over the place. The legend on the control panel makes you believe that it will light up depending on what mode you set it to, nope, just white dots, which is stupid considering you have to count the dots now to figure out what mode to go into. Putting an actual numbered list there I guess would make too much sense. Most of the modes have a minimum time of 1 min, which is way too long when testing something like 1200cc injectors. I would overfill those tubes in like 20 seconds. Other modes have some sort of timer that ticks down like it' s seconds by decreases the timer by 10th's which makes no sense. Most of the modes you can't control the pulse width, its set to whatever they have programed in. There is also not a full flow test option, so there is zero way to test actual flow rating. The system also keeps resetting the pressure, I lock it in at 40psi, run a different test and now it's at 20psi and I have to crack the pressure back up again. pressure is being voltage controlled not actual pressure controlled. System does not monitor pressure at all and the pump they use varies pressure based on which mode you choose as it's unable to provide efficient volume for large sized injectors. May work for smaller 300-500cc injectors but any larger and you have to almost overvolt the pump to get the rail pressure back up to 40psi.

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