2007 isx cm870... PLZ HELP

[Waterloo]

Here is the leak down test tool... Cummins part 3164001

Here is one someone is making, https://www.ebay.com/i/112973184976?chn=ps

Here is the real deal... https://www.ebay.com/itm/Cummins-KIT-INJ...2183551336

The ebay one will more than likely work fine. There is not much to these. And some guys here were making them at one time. If I remember correctly, you will need a gasket to make these work. If the old gasket on the motor is bad, you will need a new one. You need a good seal to get an accurate reading.