If you like car diagnostic puzzles watch this YouTube video

https://www.youtube.com/watch?v=GciYyFWUauQ


[Edited on 26/3/16 by britishtrident]

Good video that. Well I found it interesting anyway!

Do you think he could tell me why my car is a pain to start when it's cold?

Makes you miss the simplicity of distributor and carburettor. When problems were diagnosed with a test light.