We give a basic list of parts needed to build you own tester and give you a short walkthrough an. The two stroke version works in a very different fashion What is a leak down test
Motion Pro 2-Stroke Leak Down Tester - RevZilla
A leak down test is a method of using compressed air and a specialized gauge set that reads differential pressure to evaluate the condition of an engine’s cylinders, pistons and rings, and valves and seats without disassembling the engine.
This test helps identify issues such as worn piston rings, damaged cylinder walls, leaking valves, or head gasket failures by measuring the amount of air escaping from the combustion chamber
Understanding how to perform a 2 stroke. There's no question the leak down tester is the most important tool you need for a 2 stroke engine, followed by the compression tester A compression tester will not show you a air leak and pinpoint the leak A leak down tester is simple and can save you from burning down your top end with a air leak.
Engine has to be held at (or near) tdc for leakdown testing (some may test at different positions within the compression stroke for a more accurate picture) Leakdown provides a more accurate picture of the bore's health