Review on ALLOSUN EM276 Fuel Injector Tester by Gary Newman

I was looking for a way to test the injectors on my '99 Vortec 454. The ones I bought off eBay seemed like a good deal, but after installing them I still got two dropouts and wanted to eliminate them as the cause. After a little research I came across this device. The low price made me think twice, but after unpacking it seemed well made and stable. Operation is simple, all you need are injectors, a 12v power supply and some type of liquid (preferably carburetor cleaner, injector cleaner, etc.). My only two issues are the short length of the positive and negative leads and the fact that you have to turn off the power to switch modes. Otherwise, that's a lot considering how cheap it is. With this I was able to determine that injectors 3 and 4 were indeed pulsing and not misfiring.