Gunson Colortune Single Plug Kit Brake Service Tools so always grind this off

so always grind this off

but this tool is very impressive

This high quality

when the correct tool is as cheap as chips

Adapter 02-Ø in mm: 61

Gunson Colortune Single Plug Kit Brake Service Tools so always grind this offThis is effectively a glass spark plug. Colour tune has been about for years and is a very simple, yet effective tool. You replace the standard spark plug with colour tune and then start the engine. You can actually see the colour of the burn inside the combustion chamber. If the flame is very yellow then the fuel mixture is running rich. It's no substitute for a proper dyno run, but it is fabulous for diagnosis. Sadly this super useful tool has been