Professional 8 Pc Petrol Engine Compression Tester Kit 1865ERA
... thread sizes.
All presented in a handy carry case
How to check your engines
compression 1. Make sure the engine
has been warmed up before beginning the test. It is vital that ... . Hold the throttle to the full open position to ensure the engine
gets adequate air intake. 5. Crank the engine
continually for at least five to 10 full revolutions to obtain an ...