Engine load

and here are a couple on ignition timing,, but I do recommend watching the 1st film, first.

[ame="https://www.youtube.com/watch?v=xm4OmiVH2J0"]Vintage VW Training Film - Ignition Timing Part 1 - YouTube[/ame]


[ame="https://www.youtube.com/watch?v=BbX-oC1WSbs"]Vintage VW Training Film - Ignition Timing II - YouTube[/ame]